TEDS Data Dictionary

Variables in the In Home Dataset

The table on this page lists all In-Home variables. This includes all item variables from the In-Home tests and questionnaires, as well as derived variables that are based on In-Home items.

The table does not include background variables that originate from other sources (either from admin data or from other study datasets). Such variables include IDs, twin sex and zygosity variables, the random variable and general exclusion variables. See the background variables page for details.

Variables are listed in alphabetical order in the table below. The columns of the table are:

Dataset variable name.
Item or derived variable? - see item coding for the parent, post-visit and child score sheets (pdfs) for item variables; see also the description of derived variables for more information.
Source of data:
- child - from twin tests
- parent - from the parent questionnaire
- post-visit - from the post-visit ratings
- admin - from admin data
- 4 Year - from 4 Year Study booklet data
Rawdata variable name - see item coding for the parent, post-visit and child score sheets (pdfs) for more information. This is not shown for derived variables, except in simple cases where a variable is directly derived from a single item.
Dataset variable label
Data type:
- integer - numeric whole numbers
- decimal - numeric with fractional values
Variable type:
- nominal - categorical, with arbitrary numeric values
- ordinal - categorical, with ordered numeric values
- quantitative - numerical measurements of some concrete quantity
- scale value - numerical measurement derived (usually) as a sum or mean of other variables
These distinctions are arbitrary in some cases. For example, the score from a test item, having values 0 or 1, could be classified in various ways; in the table below these are classified as ordinal.
Coding or range of values - this shows the value coding used for nominal/ordinal variables, or an approximate range of values for quantitative and scale variables.

dataset variable name	item or derived variable?	source of data	rawdata variable name	dataset variable label	data type	variable type	coding or approximate range of values
dllang1/2	derived	4 Year	-	Low Language: category based on current 4 year booklet data, 1Y 0N	integer	nominal	0=no, 1=yes
dlowlan1/2	derived	4 Year	-	Low Language: historical category from time of in home visit, 1Y 0N	integer	nominal	0=no, 1=yes
dlowpar1/2	derived	4 Year	-	Low Parca: historical category from time of in home visit, 1Y 0N	integer	nominal	0=no, 1=yes
dlparca1/2	derived	4 Year	-	Low Parca: category based on current 4 year booklet data, 1Y 0N	integer	nominal	0=no, 1=yes
ecactgr1/2	item	child	actgram	Action Pictures Grammar score (in-home child)	integer	scale value	0 to 34
ecactin1/2	item	child	actinf	Action Pictures Information score (in-home child)	decimal	scale value	0 to 40
ecatt1/2	item	child	att	ATT hearing test result from in home visit, see value labels	integer	ordinal	0=not tested, 1=normal or mild hearing loss (40dB or less), 2=moderate hearing loss (over 40dB)
ecbas011/2	item	child	bas01	BAS item 1: teddy legs (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas021/2	item	child	bas02	BAS item 2: teddy mouth (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas031/2	item	child	bas03	BAS item 3: teddy eyes (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas041/2	item	child	bas04	BAS item 4: teddy arms (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas051/2	item	child	bas05	BAS item 5: teddy ears (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas061/2	item	child	bas06	BAS item 6: teddy ribbon (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas071/2	item	child	bas07	BAS item 7: car (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas081/2	item	child	bas08	BAS item 8: pencil (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas091/2	item	child	bas09	BAS item 9: watch (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas101/2	item	child	bas10	BAS item 10: horse (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas111/2	item	child	bas11	BAS item 11: horse in box (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas121/2	item	child	bas12	BAS item 12: button on car (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas131/2	item	child	bas13	BAS item 13: soldier under horse (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas141/2	item	child	bas14	BAS item 14: shows time (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas151/2	item	child	bas15	BAS item 15: drives (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas161/2	item	child	bas16	BAS item 16: barks (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas171/2	item	child	bas17	BAS item 17: car instructions (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas181/2	item	child	bas18	BAS item 18: tree behind back (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas191/2	item	child	bas19	BAS item 19: boy on bridge (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas201/2	item	child	bas20	BAS item 20: van move (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas211/2	item	child	bas21	BAS item 21: car under bridge (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas221/2	item	child	bas22	BAS item 22: boys facing (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas231/2	item	child	bas23	BAS item 23: car and van (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas241/2	item	child	bas24	BAS item 24: bridge then tree (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas251/2	item	child	bas25	BAS item 25: house before van (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas261/2	item	child	bas26	BAS item 26: car between houses (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbas271/2	item	child	bas27	BAS item 27: boy between tree and house (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecbasgt1/2	derived	child	-	BAS grammar sub-total score (in-home child), 0-11	integer	scale value	0 to 11
ecbaslt1/2	derived	child	-	BAS lexical sub-total score (in-home child), 0-16	integer	scale value	0 to 16
ecbast1/2	derived	child	-	BAS total score (in-home child), 0-27	integer	scale value	0 to 27
ecbaya1/2	item	child	bayla	Bayley item A: Positive affect (in-home child), see value labels	integer	ordinal	1=none, 2=one or two brief displays, 3=three or more brief displays, 4=one or two intense displays, 5= three or more intense displays
ecbayb1/2	item	child	baylb	Bayley item B: Negative affect (in-home child), see value labels	integer	ordinal	1=three or more intense displays, 2=one or two intense displays, 3=three or more brief displays, 4=one or two brief displays, 5=none
ecbayc1/2	item	child	baylc	Bayley item C: Soothability when upset (in-home child), see value labels	integer	ordinal	1=cannot be soothed, 2=only by physical comfort, 3=by being given a desired object, 4=by being spoken to, 5=without external assistance
ecbayd1/2	item	child	bayld	Bayley item D: Hypersensitivity to stimuli (in-home child), see value labels	integer	ordinal	1=constantly hypersensitive, 2=typically hypersensitive, 3=occasionally, 4=typically reacts appropriately, 5=constantly reacts appropriately
ecbaye1/2	item	child	bayle	Bayley item E: Energy (in-home child), see value labels	integer	ordinal	1=consistently lacks energy, 2=typically tired, 3=energetic half the time, 4=typically energetic, 5=consistently energetic
ecbayf1/2	item	child	baylf	Bayley item F: Adaptation to change in tests (in-home child), see value labels	integer	ordinal	1=consistently resists relinquishing materials, 2=typically resists, 3=half and half, 4=typically relinquishes materials, 5=consistently relinquishes
ecbayg1/2	item	child	baylg	Bayley item G: Interest in tests (in-home child), see value labels	integer	ordinal	1=no interest, 2=one or two displays of interest, 3=moderate interest, 4=much interest, 5=constant interest
ecbayh1/2	item	child	baylh	Bayley item H: Initiative with tasks (in-home child), see value labels	integer	ordinal	1=consistently shows no initiative, 2=typically no initiative, 3=half and half, 4=typically shows initiative, 5=consistently shows initiative
ecbayi1/2	item	child	bayli	Bayley item I: Exploration of surroundings (in-home child), see value labels	integer	ordinal	1=no explorations, 2=one or two instances or exploration, 3=moderate, 4=much, 5=constant exploration
ecbayj1/2	item	child	baylj	Bayley item J: Attention to tasks (in-home child), see value labels	integer	ordinal	1=constantly off task, 2=typically off task, 3=off task half the time, 4=typically attends, 5=constantly attends
ecbayk1/2	item	child	baylk	Bayley item K: Persistence in completing tasks (in-home child), see value labels	integer	ordinal	1=consistently lacks persistence, 2=typically not persistent, 3=half and half, 4=typically persistent, 5=consistently persistent
ecbayl1/2	item	child	bayll	Bayley item L: Enthusiasm towards tasks (in-home child), see value labels	integer	ordinal	1=consistently unenthusiastic, 2=typically unenthusiastic, 3=half and half, 4=typically enthusiastic, 5=consistently enthusiastic
ecbaym1/2	item	child	baylm	Bayley item M: Fearfulness (in-home child), see value labels	integer	ordinal	1=constantly fearful, 2=typically fearful, 3=fearful half the time, 4=typically trusting, 5=constantly trusting
ecbayn1/2	item	child	bayln	Bayley item N: Frustration with inability to complete tasks (in-home child), see value labels	integer	ordinal	1=consistently, 2=typically, 3=occasionally, 4=rarely, 5=never becomes frustrated
ecbayo1/2	item	child	baylo	Bayley item O: Orientation to examiner (in-home child), see value labels	integer	ordinal	1=consistently avoids, 2=typically avoids, 3=avoids half the time, 4=typically trusting, 5=constantly trusting
ecbayp1/2	item	child	baylp	Bayley item P: Social engagement (in-home child), see value labels	integer	ordinal	1=none, 2=one or two, 3=several, 4=many, 5=constant attempts to interact socially
ecbayq1/2	item	child	baylq	Bayley item Q: Co operation (in-home child), see value labels	integer	ordinal	1=consistently resists requests, 2=typically resists requests, 3=half and half, 4=typically cooperates, 5=consistently cooperates
ecbayr1/2	item	child	baylr	Bayley item R: Gross motor movement (in-home child), see value labels	integer	ordinal	1=consistently inappropriate, 2=typically inappropriate, 3=half and half, 4=typically appropriate, 5=consistently appropriate
ecbays1/2	item	child	bayls	Bayley item S: Fine motor movement (in-home child), see value labels	integer	ordinal	1=consistently inappropriate, 2=typically inappropriate, 3=half and half, 4=typically appropriate, 5=consistently appropriate
ecbayt1/2	item	child	baylt	Bayley item T: Control of movement (in-home child), see value labels	integer	ordinal	1=consistently clumsy, 2=typically clumsy, 3=half and half, 4=typically coordinated, 5=consistently coordinated
ecbayu1/2	item	child	baylu	Bayley item U: Hypotonicity (in-home child), see value labels	integer	ordinal	1=consistently hypotonic, 2=typically hypotonic, 3=half and half, 4=typically normal, 5=no hypotonicity
ecbayv1/2	item	child	baylv	Bayley item V: Hypertonicity (in-home child), see value labels	integer	ordinal	1=consistently hypertonic, 2=typically hypertonic, 3=half and half, 4=typically normal, 5=no hypertonicity
ecbayw1/2	item	child	baylw	Bayley item W: Tremulousness (in-home child), see value labels	integer	ordinal	1=constant, 2=frequent, 3=occasional, 4=infrequent, 5=none
ecbayx1/2	item	child	baylx	Bayley item X: Slow and delayed movements (in-home child), see value labels	integer	ordinal	1=consistently delayed, 2=typically delayed, 3=half and half, 4=typically appropriate, 5=consistently appropriate timing and pacing
ecbayy1/2	item	child	bayly	Bayley item Y: Frenetic movement (in-home child), see value labels	integer	ordinal	1=consistently frenetic, 2=typically frenetic, 3=half and half, 4=typically appropriate, 5=consistently appropriate timing and pacing
ecbayz1/2	item	child	baylz	Bayley item Z: Hyperactivity (in-home child), see value labels	integer	ordinal	1=consistently hyperactive, 2=typically hyperactive, 3=half and half, 4=typically not, 5=consistently not hyperactive
ecbusa51/2	item	child	busa5ls	Bus Story A5LS: average length of 5 longest sentences (in-home child), number of words	decimal	scale value	0 to 16
ecbusin1/2	item	child	businf	Bus Story Information total score (in-home child), 0-54	decimal	scale value	0 to 49
ecbussc1/2	item	child	bussub	Bus Story number of Subordinate Clauses (in-home child)	integer	scale value	0 to 6
ecbussl1/2	item	child	bussl	Bus Story Sentence Length (in-home child), number of words	integer	scale value	0 to 83
ecdata1/2	item	child	-	Inhome Child test data present, 1Y 0N	integer	nominal	0=no, 1=yes
ecgf01f1/2	item	child	gf01fin	Goldman Fristoe item 1 final (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf01i1/2	item	child	gf01ini	Goldman Fristoe item 1 initial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf01m1/2	item	child	gf01med	Goldman Fristoe item 1 medial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf02f1/2	item	child	gf02fin	Goldman Fristoe item 2 final (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf02i1/2	item	child	gf02ini	Goldman Fristoe item 2 initial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf02m1/2	item	child	gf02med	Goldman Fristoe item 2 medial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf03f1/2	item	child	gf03fin	Goldman Fristoe item 3 final (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf03i1/2	item	child	gf03ini	Goldman Fristoe item 3 initial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf03m1/2	item	child	gf03med	Goldman Fristoe item 3 medial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf04i1/2	item	child	gf04ini	Goldman Fristoe item 4 initial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf05i1/2	item	child	gf05ini	Goldman Fristoe item 5 initial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf06f1/2	item	child	gf06fin	Goldman Fristoe item 6 final (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf06i1/2	item	child	gf06ini	Goldman Fristoe item 6 initial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf06m1/2	item	child	gf06med	Goldman Fristoe item 6 medial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf07f1/2	item	child	gf07fin	Goldman Fristoe item 7 final (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf07i1/2	item	child	gf07ini	Goldman Fristoe item 7 initial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf07m1/2	item	child	gf07med	Goldman Fristoe item 7 medial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf08f1/2	item	child	gf08fin	Goldman Fristoe item 8 final (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf08i1/2	item	child	gf08ini	Goldman Fristoe item 8 initial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf08m1/2	item	child	gf08med	Goldman Fristoe item 8 medial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf09f1/2	item	child	gf09fin	Goldman Fristoe item 9 final (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf09i1/2	item	child	gf09ini	Goldman Fristoe item 9 initial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf09m1/2	item	child	gf09med	Goldman Fristoe item 9 medial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf10f1/2	item	child	gf10fin	Goldman Fristoe item 10 final (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf10i1/2	item	child	gf10ini	Goldman Fristoe item 10 initial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf10m1/2	item	child	gf10med	Goldman Fristoe item 10 medial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf11f1/2	item	child	gf11fin	Goldman Fristoe item 11 final (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf11i1/2	item	child	gf11ini	Goldman Fristoe item 11 initial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf11m1/2	item	child	gf11med	Goldman Fristoe item 11 medial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf12i1/2	item	child	gf12ini	Goldman Fristoe item 12 initial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf13f1/2	item	child	gf13fin	Goldman Fristoe item 13 final (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf13i1/2	item	child	gf13ini	Goldman Fristoe item 13 initial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf13m1/2	item	child	gf13med	Goldman Fristoe item 13 medial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf14f1/2	item	child	gf14fin	Goldman Fristoe item 14 final (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf14i1/2	item	child	gf14ini	Goldman Fristoe item 14 initial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf14m1/2	item	child	gf14med	Goldman Fristoe item 14 medial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf15f1/2	item	child	gf15fin	Goldman Fristoe item 15 final (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf15i1/2	item	child	gf15ini	Goldman Fristoe item 15 initial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf15m1/2	item	child	gf15med	Goldman Fristoe item 15 medial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf16f1/2	item	child	gf16fin	Goldman Fristoe item 16 final (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf16i1/2	item	child	gf16ini	Goldman Fristoe item 16 initial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf16m1/2	item	child	gf16med	Goldman Fristoe item 16 medial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf17f1/2	item	child	gf17fin	Goldman Fristoe item 17 final (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf17i1/2	item	child	gf17ini	Goldman Fristoe item 17 initial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf17m1/2	item	child	gf17med	Goldman Fristoe item 17 medial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf18f1/2	item	child	gf18fin	Goldman Fristoe item 18 final (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf18i1/2	item	child	gf18ini	Goldman Fristoe item 18 initial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf18m1/2	item	child	gf18med	Goldman Fristoe item 18 medial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf19f1/2	item	child	gf19fin	Goldman Fristoe item 19 final (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf19i1/2	item	child	gf19ini	Goldman Fristoe item 19 initial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf19m1/2	item	child	gf19med	Goldman Fristoe item 19 medial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf20f1/2	item	child	gf20fin	Goldman Fristoe item 20 final (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf20i1/2	item	child	gf20ini	Goldman Fristoe item 20 initial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf20m1/2	item	child	gf20med	Goldman Fristoe item 20 medial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf21f1/2	item	child	gf21fin	Goldman Fristoe item 21 final (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf21i1/2	item	child	gf21ini	Goldman Fristoe item 21 initial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf21m1/2	item	child	gf21med	Goldman Fristoe item 21 medial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf22f1/2	item	child	gf22fin	Goldman Fristoe item 22 final (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf22i1/2	item	child	gf22ini	Goldman Fristoe item 22 initial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf22m1/2	item	child	gf22med	Goldman Fristoe item 22 medial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf23i1/2	item	child	gf23ini	Goldman Fristoe item 23 initial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf23m1/2	item	child	gf23med	Goldman Fristoe item 23 medial (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf24b1/2	item	child	gfb24bl	Goldman Fristoe item 24 blend (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf25b1/2	item	child	gfb25br	Goldman Fristoe item 25 blend (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf26b1/2	item	child	gfb26dr	Goldman Fristoe item 26 blend (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf27b1/2	item	child	gfb27fl	Goldman Fristoe item 27 blend (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf28b1/2	item	child	gfb28kl	Goldman Fristoe item 28 blend (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf29b1/2	item	child	gfb29kr	Goldman Fristoe item 29 blend (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf30b1/2	item	child	gfb30pl	Goldman Fristoe item 30 blend (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf31b1/2	item	child	gfb31sk	Goldman Fristoe item 31 blend (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf32b1/2	item	child	gfb32sl	Goldman Fristoe item 32 blend (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf33b1/2	item	child	gfb33st	Goldman Fristoe item 33 blend (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf34b1/2	item	child	gfb34tr	Goldman Fristoe item 34 blend (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgf35b1/2	item	child	gfb35hw	Goldman Fristoe test 35 blend (in-home child), see value labels	integer	nominal	0=incorrect, 1=correct, 2=not elicited
ecgft1/2	derived	child	-	Goldman Fristoe total score (in-home child), 0-74	integer	scale value	0 to 74
ecmcabb1/2	item	child	mc10arm1	McCarthy Arm Coordination: Ball Bouncing total score (in-home child), 0-7	integer	scale value	0 to 7
ecmcabc1/2	item	child	mc10arm2	McCarthy Arm Coordination: Beanbag Catch total score (in-home child), 0-9	integer	scale value	0 to 9
ecmcabt1/2	item	child	mc10arm3	McCarthy Arm Coordination: Beanbag Target Game total score (in-home child), 0-12	integer	scale value	0 to 12
ecmcblo1/2	item	child	mc01blo	McCarthy Block Building total score (in-home child), 0-10	integer	scale value	0 to 10
ecmccgr1/2	item	child	mc18cg	McCarthy Conceptual Grouping total score (in-home child), 0-12	integer	scale value	0 to 12
ecmcchi1/2	item	child	mc13chi	McCarthy Draw a Child total score (in-home child), 0-20	integer	scale value	0 to 20
ecmccso1/2	item	child	mc16cs	McCarthy Counting and Sorting total score (in-home child), 0-9	integer	scale value	0 to 9
ecmcdes1/2	item	child	mc12des	McCarthy Draw a Design total score (in-home child), 0-19	integer	scale value	0 to 19
ecmcgci1/2	derived	child	-	McCarthy General Cognitive index score (in-home child), 0-263.5	decimal	scale value	0 to 263.5
ecmchand1/2	derived	child	-	McCarthy ordinal handedness scale (in-home child), see value labels	integer	ordinal	1=left, 2=mainly left, 3=both equally, 4=mainly right, 5=right
ecmcimi1/2	item	child	mc11imi	McCarthy Imitative Action total score (in-home child), 0-4	integer	scale value	0 to 4
ecmcleg1/2	item	child	mc09leg	McCarthy Leg Coordination total score (in-home child), 0-13	integer	scale value	0 to 13
ecmcmmi1/2	derived	child	-	McCarthy Memory index score (in-home child), 0-73	decimal	scale value	0 to 73
ecmcmti1/2	derived	child	-	McCarthy Motor index score (in-home child), 0-84	integer	scale value	0 to 84
ecmcnmb1/2	item	child	mc14nm2	McCarthy Numerical Memory: Backward Series total score (in-home child), 0-10	integer	scale value	0 to 10
ecmcnmf1/2	item	child	mc14nm1	McCarthy Numerical Memory: Forward Series total score (in-home child), 0-12	integer	scale value	0 to 12
ecmcnmt1/2	derived	child	-	McCarthy Numerical Memory overall total score (in-home child), 0-32	integer	scale value	0 to 32
ecmcnum1/2	item	child	mc05num	McCarthy Number Questions total score (in-home child), 0-12	integer	scale value	0 to 12
ecmcopp1/2	item	child	mc17opp	McCarthy Opposite Analogies total score (in-home child), 0-9	integer	scale value	0 to 9
ecmcpic1/2	item	child	mc03pic	McCarthy Pictorial Memory total score (in-home child), 0-6	integer	scale value	0 to 6
ecmcppi1/2	derived	child	-	McCarthy Perceptual Performance index score (in-home child), 0-83.5	decimal	scale value	0 to 83.5
ecmcpuz1/2	item	child	mc02puz	McCarthy Puzzle Solving total score (in-home child), 0-27	integer	scale value	0 to 27
ecmcqni1/2	derived	child	-	McCarthy Quantitative index score (in-home child), 0-65	integer	scale value	0 to 65
ecmctap1/2	item	child	mc06tap	McCarthy Tapping Sequence total score (in-home child), 0-9	integer	scale value	0 to 9
ecmcvbi1/2	derived	child	-	McCarthy Verbal index score (in-home child), 0-115	decimal	scale value	0 to 115
ecmcvfl1/2	item	child	mc15vf	McCarthy Verbal Fluency total score (in-home child), 0-36	integer	scale value	0 to 36
ecmcvmt1/2	derived	child	-	McCarthy Verbal Memory overall total score (in-home child), 0-26	decimal	scale value	0 to 26
ecmcvst1/2	item	child	mc07vrb2	McCarthy Verbal Memory: Story total score (in-home child), 0-11	integer	scale value	0 to 11
ecmcvws1/2	item	child	mc07vrb1	McCarthy Verbal Memory: Words and Sentences total score (in-home child), 0-30	integer	scale value	0 to 30
ecmcwkt1/2	derived	child	-	McCarthy Word Knowledge overall total score (in-home child), 0-29	integer	scale value	0 to 29
ecmcwov1/2	item	child	mc04wrd2	McCarthy Word Knowledge: Oral Vocabulary total score (in-home child), 0-20	integer	scale value	0 to 20
ecmcwpv1/2	item	child	mc04wrd1	McCarthy Word Knowledge: Picture Vocabulary total score (in-home child), 0-9	integer	scale value	0 to 9
ecnon011/2	item	child	non01	Nonword Repetition item 1: dopelate (in-home child), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
ecnon021/2	item	child	non02	Nonword Repetition item 2: glistering (in-home child), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
ecnon031/2	item	child	non03	Nonword Repetition item 3: pennel (in-home child), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
ecnon041/2	item	child	non04	Nonword Repetition item 4: hampent (in-home child), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
ecnon051/2	item	child	non05	Nonword Repetition item 5: glistow (in-home child), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
ecnon061/2	item	child	non06	Nonword Repetition item 6: frescovent (in-home child), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
ecnon071/2	item	child	non07	Nonword Repetition item 7: bannifer (in-home child), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
ecnon081/2	item	child	non08	Nonword Repetition item 8: ballop (in-home child), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
ecnon091/2	item	child	non09	Nonword Repetition item 9: trumpetine (in-home child), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
ecnon101/2	item	child	non10	Nonword Repetition item 10: sladding (in-home child), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
ecnon111/2	item	child	non11	Nonword Repetition item 11: tafflest (in-home child), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
ecnon121/2	item	child	non12	Nonword Repetition item 12: barrazon (in-home child), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
ecnon131/2	item	child	non13	Nonword Repetition item 13: commerine (in-home child), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
ecnon141/2	item	child	non14	Nonword Repetition item 14: thickery (in-home child), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
ecnon151/2	item	child	non15	Nonword Repetition item 15: rubid (in-home child), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
ecnon161/2	item	child	non16	Nonword Repetition item 16: brasterer (in-home child), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
ecnon171/2	item	child	non17	Nonword Repetition item 17: diller (in-home child), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
ecnon181/2	item	child	non18	Nonword Repetition item 18: bannow (in-home child), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
ecnon191/2	item	child	non19	Nonword Repetition item 19: prindle (in-home child), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
ecnon201/2	item	child	non20	Nonword Repetition item 20: prindle (in-home child), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
ecnont1/2	derived	child	-	Nonword Repetition total score (in-home child), 0-20	integer	scale value	0 to 20
econtrola	derived	child	-	Control family, based on historical categories from time of in home visit, 1Y 0N	integer	nominal	0=no, 1=yes
econtrolb	derived	child	-	Control family, based on current 4 year booklet data, 1Y 0N	integer	nominal	0=no, 1=yes
ecph011/2	item	child	phon01	Phonological Awareness item 1 score (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecph021/2	item	child	phon02	Phonological Awareness item 2 score (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecph031/2	item	child	phon03	Phonological Awareness item 3 score (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecph041/2	item	child	phon04	Phonological Awareness item 4 score (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecph051/2	item	child	phon05	Phonological Awareness item 5 score (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecph061/2	item	child	phon06	Phonological Awareness item 6 score (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecph071/2	item	child	phon07	Phonological Awareness item 7 score (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecph081/2	item	child	phon08	Phonological Awareness item 8 score (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecph091/2	item	child	phon09	Phonological Awareness item 9 score (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecph101/2	item	child	phon10	Phonological Awareness item 10 score (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecph111/2	item	child	phon11	Phonological Awareness item 11 score (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecph121/2	item	child	phon12	Phonological Awareness item 12 score (in-home child), 1correct 0wrong	integer	ordinal	0=incorrect, 1=correct
ecphhand1/2	derived	child	-	Phonological Awareness mean handedness scale (in-home child), 1-5	decimal	scale value	1 (left) to 5 (right)
ecpht1/2	derived	child	-	Phonological Awareness total score for first 8 items (in-home child), 0-8	integer	scale value	0 to 8
ecsepm1/2	item	child	sepmum	Separation Anxiety: Mum needs to come in (in-home child), 1Y 0N	integer	nominal	0=no, 1=yes
ecsepro1/2	item	child	seppro	Separation Anxiety: protests when Mum leaves (in-home child), 1Y 0N	integer	nominal	0=no, 1=yes
ecsept1/2	item	child	septwin	Separation Anxiety: resists separation from Twin (in-home child), 1Y 0N	integer	nominal	0=no, 1=yes
ectestn1/2	derived	child	-	Number of cognitive tests with data present (in-home child), 0-20	integer	ordinal	0 to 20
ectgft1/2	derived	child	-	Goldman Fristoe transformed total score (in-home child), 0-1	decimal	scale value	0 to 1
edata	derived	parent, child	-	Inhome visit data present (child, parent or postvisit), 1Y 0N	integer	nominal	0=no, 1=yes
eexclude	derived	admin	-	Exclusion from general analysis (in home), 1Y 0N	integer	nominal	0=no, 1=yes
emedexcl	item	admin	-	Medical exclusion determined at time of inhome visit, 1Y 0N	integer	nominal	0=no, 1=yes
epramboo	item	parent	plt03gbo	Do they have enough books (in-home parent), see value labels	integer	ordinal	1=definitely not enough, 2=probably not enough, 3=probably enough, 4=definitely enough
epramdra	item	parent	plt03gdr	Do they have enough toys for drawing/colouring (in-home parent), see value labels	integer	ordinal	1=definitely not enough, 2=probably not enough, 3=probably enough, 4=definitely enough
eprammak	item	parent	plt03gma	Do they have enough toys for making/building (in-home parent), see value labels	integer	ordinal	1=definitely not enough, 2=probably not enough, 3=probably enough, 4=definitely enough
eprampre	item	parent	plt03gpr	Do they have enough toys for pretend play (in-home parent), see value labels	integer	ordinal	1=definitely not enough, 2=probably not enough, 3=probably enough, 4=definitely enough
eprapboo	item	parent	plt03hbo	Are their books mostly right for their age (in-home parent), see value labels	integer	ordinal	1=mostly too old, 2=mostly about the right age, 3=mostly too young
eprapdra	item	parent	plt03hdr	Are their drawing/colouring toys mostly right for their age (in-home parent), see value labels	integer	ordinal	1=mostly too old, 2=mostly about the right age, 3=mostly too young
eprapmak	item	parent	plt03hma	Are their making/building toys mostly right for their age (in-home parent), see value labels	integer	ordinal	1=mostly too old, 2=mostly about the right age, 3=mostly too young
eprappre	item	parent	plt03hpr	Are their pretend play toys mostly right for their age (in-home parent), see value labels	integer	ordinal	1=mostly too old, 2=mostly about the right age, 3=mostly too young
eprdata	derived	parent	-	Inhome Parent data present, 1Y 0N	integer	nominal	0=no, 1=yes
eprdraw1/2	item	parent	plt03adr, plt03bdr	How often did child do drawing/colouring in last month (in-home parent), see value labels	integer	ordinal	1=most of the time, 2=some of the time, 3=a little, 4=hardly or not at all
epreqpbu	item	parent	plt03e	Do they own equipment for building things (in-home parent), see value labels	integer	ordinal	1=none in the house, 2=only some and shared with everyone, 3=yes for the twins to share, 4=each twin has own
epreqpdr	item	parent	plt03d	Do they own equipment for drawing/colouring (in-home parent), see value labels	integer	ordinal	1=none in the house, 2=only some and shared with everyone, 3=yes for the twins to share, 4=each twin has own
epreqppr	item	parent	plt03f	Do they own equipment for pretend play (in-home parent), see value labels	integer	ordinal	1=none in the house, 2=only some and shared with everyone, 3=yes for the twins to share, 4=each twin has own
eprexer1/2	item	parent	plt03aex, plt03bex	How often did child do exercise/sport in last month (in-home parent), see value labels	integer	ordinal	1=most of the time, 2=some of the time, 3=a little, 4=hardly or not at all
epripbrk	item	parent	plt01d	How many things might break indoors (in-home parent), see value labels	integer	ordinal	1=many things, 2=a few things, 3=almost nothing
epripdan	item	parent	plt01e	How many things might be dangerous indoors (in-home parent), see value labels	integer	ordinal	1=many things, 2=a few things, 3=almost nothing
epripeye	item	parent	plt01b	How easy is it to keep an eye on them playing indoors (in-home parent), see value labels	integer	ordinal	1=very easy, 2=fairly easy, 3=somewhat difficult, 4=very difficult
epriphap	item	parent	plt01c	Are you happy with them playing indoors (in-home parent), see value labels	integer	ordinal	1=very happy, 2=fairly happy, 3=a bit unhappy, 4=very unhappy
epriplay	item	parent	plt01a	Where do children play indoors (in-home parent), see value labels	integer	nominal	1=kitchen, 2=sitting room, 3=bedroom, 4=other family room
eprjigs	item	parent	plt03c	Do twins have any jigsaw puzzles (in-home parent), 1Y 0N	integer	nominal	0=no, 1=yes
eprjigsn	item	parent	plt03cn	How many jigsaw puzzles do they have (in-home parent), estimated number	integer	quantitative	1 to 100 (number of puzzles)
eprlist1/2	item	parent	plt03ali, plt03bli	How often did child listen to stories in last month (in-home parent), see value labels	integer	ordinal	1=most of the time, 2=some of the time, 3=a little, 4=hardly or not at all
eprmake1/2	item	parent	plt03ama, plt03bma	How often did child do making/building in last month (in-home parent), see value labels	integer	ordinal	1=most of the time, 2=some of the time, 3=a little, 4=hardly or not at all
epropcli	item	parent	plt02dcl	Is there a climbing frame outdoors (in-home parent), 1Y 0N	integer	nominal	0=no, 1=yes
epropeye	item	parent	plt02f	How easy is it to keep an eye on them playing outdoors (in-home parent), see value labels	integer	ordinal	1=very easy, 2=fairly easy, 3=not very easy, 4=not at all easy
epropfen	item	parent	plt02c	Is there a fence or walls outdoors (in-home parent), see value labels	integer	ordinal	1=completely enclosed, 2=partly enclosed, 3=completely open
epropfrq	item	parent	plt02b	How often do they play outdoors (in-home parent), see value labels	integer	nominal	1=daily, 2=at least once a week, 3=at least 4 times a week, 4=less than once a week
eproplay	item	parent	plt02a	Where do children play outdoors (in-home parent), see value labels	integer	nominal	1=your own garden, 2=a shared garden, 3=general public space
epropoth	item	parent	plt02do	Are there other play things outdoors (in-home parent), 1Y 0N	integer	nominal	0=no, 1=yes
epropsaf	item	parent	plt02e	How safe is it for them on their own outdoors (in-home parent), see value labels	integer	ordinal	1=very easy, 2=fairly easy, 3=not very easy, 4=not at all easy
epropsan	item	parent	plt02dsa	Is there a sandpit outdoors (in-home parent), 1Y 0N	integer	nominal	0=no, 1=yes
epropsli	item	parent	plt02dsl	Is there a slide outdoors (in-home parent), 1Y 0N	integer	nominal	0=no, 1=yes
epropswi	item	parent	plt02dsw	Are there swings outdoors (in-home parent), 1Y 0N	integer	nominal	0=no, 1=yes
eproptri	item	parent	plt02dtr	Are there tricycles outdoors (in-home parent), 1Y 0N	integer	nominal	0=no, 1=yes
eprpret1/2	item	parent	plt03apr, plt03bpr	How often did child do pretend play in last month (in-home parent), see value labels	integer	ordinal	1=most of the time, 2=some of the time, 3=a little, 4=hardly or not at all
eprvoc01	derived	parent	pvoc01	Parent Vocabulary item 1: moist (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc02	derived	parent	pvoc02	Parent Vocabulary item 2: quick (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc03	derived	parent	pvoc03	Parent Vocabulary item 3: annual (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc04	derived	parent	pvoc04	Parent Vocabulary item 4: splendid (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc05	derived	parent	pvoc05	Parent Vocabulary item 5: customary (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc06	derived	parent	pvoc06	Parent Vocabulary item 6: fluid (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc07	derived	parent	pvoc07	Parent Vocabulary item 7: idle (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc08	derived	parent	pvoc08	Parent Vocabulary item 8: deserted (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc09	derived	parent	pvoc09	Parent Vocabulary item 9: rare (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc10	derived	parent	pvoc10	Parent Vocabulary item 10: contented (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc11	derived	parent	pvoc11	Parent Vocabulary item 11: enraged (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc12	derived	parent	pvoc12	Parent Vocabulary item 12: beneficial (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc13	derived	parent	pvoc13	Parent Vocabulary item 13: mouldy (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc14	derived	parent	pvoc14	Parent Vocabulary item 14: rasping (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc15	derived	parent	pvoc15	Parent Vocabulary item 15: dietary (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc16	derived	parent	pvoc16	Parent Vocabulary item 16: sober (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc17	derived	parent	pvoc17	Parent Vocabulary item 17: droll (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc18	derived	parent	pvoc18	Parent Vocabulary item 18: stately (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc19	derived	parent	pvoc19	Parent Vocabulary item 19: disreputable (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc20	derived	parent	pvoc20	Parent Vocabulary item 20: genteel (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc21	derived	parent	pvoc21	Parent Vocabulary item 21: original (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc22	derived	parent	pvoc22	Parent Vocabulary item 22: novel (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc23	derived	parent	pvoc23	Parent Vocabulary item 23: famous (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc24	derived	parent	pvoc24	Parent Vocabulary item 24: systematic (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc25	derived	parent	pvoc25	Parent Vocabulary item 25: fatigued (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc26	derived	parent	pvoc26	Parent Vocabulary item 26: resplendent (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc27	derived	parent	pvoc27	Parent Vocabulary item 27: generous (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc28	derived	parent	pvoc28	Parent Vocabulary item 28: kingly (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc29	derived	parent	pvoc29	Parent Vocabulary item 29: flexible (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc30	derived	parent	pvoc30	Parent Vocabulary item 30: sagacious (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc31	derived	parent	pvoc31	Parent Vocabulary item 31: heedless (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc32	derived	parent	pvoc32	Parent Vocabulary item 32: deficient (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc33	derived	parent	pvoc33	Parent Vocabulary item 33: vigilant (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc34	derived	parent	pvoc34	Parent Vocabulary item 34: minimum (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc35	derived	parent	pvoc35	Parent Vocabulary item 35: gallant (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc36	derived	parent	pvoc36	Parent Vocabulary item 36: giddy (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc37	derived	parent	pvoc37	Parent Vocabulary item 37: discreet (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc38	derived	parent	pvoc38	Parent Vocabulary item 38: destined (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc39	derived	parent	pvoc39	Parent Vocabulary item 39: eternal (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc40	derived	parent	pvoc40	Parent Vocabulary item 40: lavish (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc41	derived	parent	pvoc41	Parent Vocabulary item 41: defective (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc42	derived	parent	pvoc42	Parent Vocabulary item 42: vague (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc43	derived	parent	pvoc43	Parent Vocabulary item 43: essential (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc44	derived	parent	pvoc44	Parent Vocabulary item 44: impulsive (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc45	derived	parent	pvoc45	Parent Vocabulary item 45: diffident (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc46	derived	parent	pvoc46	Parent Vocabulary item 46: erroneous (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc47	derived	parent	pvoc47	Parent Vocabulary item 47: benevolent (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc48	derived	parent	pvoc48	Parent Vocabulary item 48: grimy (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc49	derived	parent	pvoc49	Parent Vocabulary item 49: lacerated (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoc50	derived	parent	pvoc50	Parent Vocabulary item 50: insolent (in-home parent), 1correct 0incorrect	integer	ordinal	0=incorrect, 1=correct
eprvoct	derived	parent	-	Parent Vocabulary total score (in-home parent), 0-50	integer	scale value	0 to 50
epvcval1/2	item	post-visit	pv27cv	Was there any reason to doubt validity of child responses (in-home post-visit), 1Y 0N	integer	nominal	0=no, 1=yes
epvdata1/2	item	post-visit	-	Inhome Postvisit data present, see value labels	integer	nominal	0=no, 1=yes complete, 2=partially complete
epvhome1/2	item	post-visit	pv1hom	What type of home does family live in (in-home post-visit), see value labels	integer	nominal	1=council estate or high-rise flat, 2=private flat, 3=semi detached house, 4=detached house, 5=other
epvialc1/2	item	post-visit	pv9ialc	Was there alcohol in the house (in-home post-visit), 1Y 0N	integer	nominal	0=no, 1=yes
epviboo1/2	item	post-visit	pv5ibk	Were there books in the house (in-home post-visit), 1Y 0N	integer	nominal	0=no, 1=yes
epvibug1/2	item	post-visit	pv7ibug	Were there bugs in the house (in-home post-visit), 1Y 0N	integer	nominal	0=no, 1=yes
epvicle1/2	item	post-visit	pv4icl	How clean was it inside (in-home post-visit), see value labels	integer	ordinal	1=very clean, 2, 3=somewhat clean, 4=dirty or very dirty
epvipic1/2	item	post-visit	pv10ipic	Were there family pictures in the house (in-home post-visit), 1Y 0N	integer	nominal	0=no, 1=yes
epvitem1/2	item	post-visit	pv8itemp	Was the temperature uncomfortable in the house (in-home post-visit), 1Y 0N	integer	nominal	0=no, 1=yes
epvitoy1/2	item	post-visit	pv6itoy	Were there appropriate toys in the house (in-home post-visit), 1Y 0N	integer	nominal	0=no, 1=yes
epvjoy1/2	item	post-visit	pv25joy	How much joy in parenting was there (in-home post-visit), see value labels	integer	ordinal	2=none or a little, 3=some, 4=more than average, 5=a lot
epvknow1/2	item	post-visit	pv24kno	How well did the parent seem to know the child (in-home post-visit), see value labels	integer	ordinal	2=not well, 3=about as well as most parents, 4=better than most, 5=very well
epvmval1/2	item	post-visit	pv26mv	Was there any reason to doubt validity of parent responses (in-home post-visit), 1Y 0N	integer	nominal	0=no, 1=yes
epvocle1/2	item	post-visit	pv11ocl	How clean was it outside (in-home post-visit), see value labels	integer	ordinal	1=very clean, 2, 3=somewhat clean, 4=dirty or very dirty
epvodan1/2	item	post-visit	pv20odan	Was there anything else that looked dangerous (in-home post-visit), 1Y 0N	integer	nominal	0=no, 1=yes
epvopla1/2	item	post-visit	pv12opl	Was there a playground outside the house (in-home post-visit), 1Y 0N	integer	nominal	0=no, 1=yes
epvosaf1/2	item	post-visit	pv19osaf	Was there a safe play area outside (in-home post-visit), 1Y 0N	integer	nominal	0=no, 1=yes
epvotoy1/2	item	post-visit	pv13otoy	Were there appropriate toys outside the house (in-home post-visit), 1Y 0N	integer	nominal	0=no, 1=yes
epvotra1/2	item	post-visit	pv16otra	Was there busy traffic outside the house (in-home post-visit), 1Y 0N	integer	nominal	0=no, 1=yes
epvpeop1/2	item	post-visit	pv2peo	How many people live in the home (in-home post-visit), see value labels	integer	ordinal	3=3, 4=4, 5=5, 6=6 or more people
epvrelq1/2	item	post-visit	pv22rel	Rate the quality of the parent-child relationship (in-home post-visit), see value labels	integer	ordinal	2=slightly or very negative, 3=average, 4=mostly good, 5=positive
epvroom1/2	item	post-visit	pv3room	How many rooms are there (in-home post-visit), see value labels	integer	ordinal	1=4 or fewer, 2=5, 3=6, 4=7-8, 5=9 or more
epvwarm1/2	item	post-visit	pv21pc	How warm were the parent-child interactions (in-home post-visit), see value labels	integer	ordinal	2=reserved or cold, 3=average, 4=somewhat warm, 5=warm
epvyell1/2	item	post-visit	pv23yell	How much did the parent yell or raise voice (in-home post-visit), see value labels	integer	ordinal	1=not at all, 2=a little or some, 3=more than average or a lot
etestage	derived	admin	-	Age of twins at time of in home visit (decimal years)	decimal	quantitative	4 to 5 (years)
etestLLCage	derived	admin	-	Age of twin at time of in home visit (for use in LLC TRE), months	integer	quantitative	approx. 49 to 59 (months)
etestLLCdate	derived	admin	-	Date of in home visit (for use in LLC TRE), yyyy-mm string	string	date value	approx. '1998-04' to '2001-05'
ezactgr1/2	derived	child	-	ecactgr standardised to control distribution (in-home child)	decimal	scale value	approx -3 to +2 (standardised)
ezactin1/2	derived	child	-	ecactin standardised to control distribution (in-home child)	decimal	scale value	approx -5 to +2 (standardised)
ezartic1/2	derived	child	-	Articulation composite (in-home child), standardised to control distribution	decimal	scale value	approx -4 to +2 (standardised)
ezbasgt1/2	derived	child	-	ecbasgt standardised to control distribution (in-home child)	decimal	scale value	approx -5 to +2 (standardised)
ezbaslt1/2	derived	child	-	ecbaslt standardised to control distribution (in-home child)	decimal	scale value	approx -15 to +1 (standardised)
ezbast1/2	derived	child	-	ecbast standardised to control distribution (in-home child)	decimal	scale value	approx -10 to +1 (standardised)
ezbusa51/2	derived	child	-	ecbusa5 standardised to control distribution (in-home child)	decimal	scale value	approx -2 to +3 (standardised)
ezbusin1/2	derived	child	-	ecbusin standardised to control distribution (in-home child)	decimal	scale value	approx -2 to +3 (standardised)
ezbussc1/2	derived	child	-	ecbussc standardised to control distribution (in-home child)	decimal	scale value	approx -1 to +6 (standardised)
ezbussl1/2	derived	child	-	ecbussl standardised to control distribution (in-home child)	decimal	scale value	approx -2 to +3 (standardised)
ezllan1/2	derived	child	-	Language composite, Long version from 8 components (in-home child), standardised to control distribution	decimal	scale value	approx -7 to +3 (standardised)
ezlnv1/2	derived	child	-	Non-Verbal composite, Long version from 9 components (in-home child), standardised to control distribution	decimal	scale value	approx -5 to +3 (standardised)
ezmcblo1/2	derived	child	-	ecmcblo standardised to control distribution (in-home child)	decimal	scale value	approx -6 to +1 (standardised)
ezmccgr1/2	derived	child	-	ecmccgr standardised to control distribution (in-home child)	decimal	scale value	approx -3 to +2 (standardised)
ezmcchi1/2	derived	child	-	ecmcchi standardised to control distribution (in-home child)	decimal	scale value	approx -3 to +2 (standardised)
ezmccso1/2	derived	child	-	ecmccso standardised to control distribution (in-home child)	decimal	scale value	approx -3 to +2 (standardised)
ezmcdes1/2	derived	child	-	ecmcdes standardised to control distribution (in-home child)	decimal	scale value	approx -2 to +5 (standardised)
ezmcgci1/2	derived	child	-	ecmcgci standardised to control distribution (in-home child)	decimal	scale value	approx -4 to +3 (standardised)
ezmcimi1/2	derived	child	-	ecmcimi standardised to control distribution (in-home child)	decimal	scale value	approx -3 to +1 (standardised)
ezmcmmi1/2	derived	child	-	ecmcmmi standardised to control distribution (in-home child)	decimal	scale value	approx -3 to +3 (standardised)
ezmcmti1/2	derived	child	-	ecmcmti standardised to control distribution (in-home child)	decimal	scale value	approx -4 to +3 (standardised)
ezmcnmt1/2	derived	child	-	ecmcnmt standardised to control distribution (in-home child)	decimal	scale value	approx -2 to +5 (standardised)
ezmcnum1/2	derived	child	-	ecmcnum standardised to control distribution (in-home child)	decimal	scale value	approx -4 to +4 (standardised)
ezmcopp1/2	derived	child	-	ecmcopp standardised to control distribution (in-home child)	decimal	scale value	approx -2 to +2 (standardised)
ezmcpic1/2	derived	child	-	ecmcpic standardised to control distribution (in-home child)	decimal	scale value	approx -2 to +2 (standardised)
ezmcppi1/2	derived	child	-	ecmcppi standardised to control distribution (in-home child)	decimal	scale value	approx -5 to +4 (standardised)
ezmcpuz1/2	derived	child	-	ecmcpuz standardised to control distribution (in-home child)	decimal	scale value	approx -2 to +2 (standardised)
ezmcqni1/2	derived	child	-	ecmcqni standardised to control distribution (in-home child)	decimal	scale value	approx -4 to +4 (standardised)
ezmctap1/2	derived	child	-	ecmctap standardised to control distribution (in-home child)	decimal	scale value	approx -2 to +3 (standardised)
ezmcvbi1/2	derived	child	-	ecmcvbi standardised to control distribution (in-home child)	decimal	scale value	approx -3 to +3 (standardised)
ezmcvfl1/2	derived	child	-	ecmcvfl standardised to control distribution (in-home child)	decimal	scale value	approx -2 to +3 (standardised)
ezmcvmt1/2	derived	child	-	ecmcvmt standardised to control distribution (in-home child)	decimal	scale value	approx -2 to +2 (standardised)
ezmcvst1/2	derived	child	-	ecmcvst standardised to control distribution (in-home child)	decimal	scale value	approx -1 to +3 (standardised)
ezmcvws1/2	derived	child	-	ecmcvws standardised to control distribution (in-home child)	decimal	scale value	approx -2 to +2 (standardised)
ezmcwkt1/2	derived	child	-	ecmcwkt standardised to control distribution (in-home child)	decimal	scale value	approx -4 to +4 (standardised)
ezmcwov1/2	derived	child	-	ecmcwov standardised to control distribution (in-home child)	decimal	scale value	approx -1 to +5 (standardised)
ezmcwpv1/2	derived	child	-	ecmcwpv standardised to control distribution (in-home child)	decimal	scale value	approx -15 to +0.2 (standardised)
eznont1/2	derived	child	-	ecnont standardised to control distribution (in-home child)	decimal	scale value	approx -3 to +1 (standardised)
ezpht1/2	derived	child	-	ecpht standardised to control distribution (in-home child)	decimal	scale value	approx -2 to +2 (standardised)
ezslan1/2	derived	child	-	Language composite, Short version from 7 components (in-home child), standardised to control distribution	decimal	scale value	approx -7 to +3 (standardised)
ezsnv1/2	derived	child	-	Non-Verbal composite, Short version from 4 components (in-home child), standardised to control distribution	decimal	scale value	approx -5 to +4 (standardised)
eztgft1/2	derived	child	-	ectgft standardised to control distribution (in-home child)	decimal	scale value	approx -3 to +1 (standardised)