TEDS Data Dictionary

Variables in the 10 Year Dataset

The table on this page lists all 10 Year variables. This includes all item variables from the 10 Year questionnaires and web activities, as well as derived variables that are based on 10 Year 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
Dataset variable label (in SPSS)
Source of data:
- child - from the twin web tests
- parent - from the parent web questionnaire
- teacher - from the (paper) teacher questionnaire
- admin - administrative data, logged in the TEDS admin database
Item or derived variable?
Data type:
- integer - numeric whole numbers
- decimal - numeric with fractional values
- string - alphanumeric character strings
Variable type:
- nominal - categorical, with arbitrary numeric or string values
- ordinal - categorical, with ordered numeric values
- quantitative - numerical measurements of some concrete quantity such as age or time interval
- scale value - numerical measurement derived (usually) as a sum or mean of other variables
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	dataset variable label	source of data	item or derived variable?	data type	variable level	coding or approximate range of values
jaXXa1/2 (XX is the item number, 01-42)	Author recognition (10 year web) response: item XX selected, 1Y 0N	child	item	integer	nominal	0=no (not selected), 1=yes (selected)
jadata1/2	Author recognition web test completed by child at 10, 1Y 0N	child	item	integer	nominal	0=no, 1=yes
jarcortt1/2	Author Recognition (10 year web) number of correct authors selected, 0-21	child	derived	integer	scale value	0 to 21
jarinctt1/2	Author Recognition (10 year web) number of incorrect authors selected, 0-21	child	derived	integer	scale value	0 to 21
jartt1/2	Author Recognition (10 year web) adjusted total score, -21 to +21	child	derived	integer	scale value	-21 to +21
jastat1/2	Author Recognition web test status at 10, see value labels	child	item	integer	nominal	0=not started, 2=completed successfully, 4=completed but responded randomly
jcdata1/2	Twin web data (at least one test) present at 10, 1Y 0N	child	derived	integer	nominal	0=no, 1=yes
jcg1/2	Child G composite (10 year twin web), standardised	child	derived	decimal	scale value	approx. -3 to +3 (standardised)
jcnv1/2	Child Non-verbal composite (10 year twin web), standardised	child	derived	decimal	scale value	approx. -3 to +3 (standardised)
jcohort	Cohort for 10yr study, see value labels	admin	item	integer	nominal	1=twins born Jan-94 to Aug-94, 2=twins born Sep-94 to Aug-95
jcstage1/2	Age of twin (years) when web tests started at 10	child	derived	decimal	quantitative	approx. 9.4 to 10.8 (years)
jcstLLCage1	Age of twin when 10yr child web tests started (for use in LLC TRE), months	child	derived	integer	quantitative	approx. 113 to 130 (months)
jcstLLCdate1	Date when 10yr child web tests started (for use in LLC TRE), yyyy-mm string	child	derived	string	date value	approx. '2004-06' to '2005-09'
jcvb1/2	Child Verbal composite (10 year twin web), standardised	child	derived	decimal	scale value	approx. -3 to +3 (standardised)
jgdata1/2	General Knowledge web test completed by child at 10, 1Y 0N	child	item	integer	nominal	0=no, 1=yes
jgenkat1/2	General knowledge test (10 year web) mean answer time (seconds)	child	derived	decimal	quantitative	approx. 0-30 seconds
jgent1/2	General Knowledge (10 year web) total score, 0-30	child	derived	integer	scale value	0 to 30
jgenta1/2	General Knowledge (10 year web) adjusted total score, 0-30	child	derived	decimal	scale value	0 to 30
jgsess1/2	General Knowledge web test number of sessions at 10	child	item	integer	quantitative	approx. 1-5
jgstat1/2	General knowledge web test status at 10, see value labels	child	item	integer	nominal	0=not started, 1=started but not completed, 2=completed successfully, 4=completed but responded randomly
jgtime1/2	General Knowledge web test time elapsed at 10, seconds	child	item	integer	quantitative	approx. 0-1500 seconds
jgXXa1/2 (XX is the item number, 01-30)	General knowledge (10 year web) item XX answer selected, see value labels	child	item	integer	nominal	1 to 4
jgXXs1/2 (XX is the item number, 01-30)	General knowledge (10 year web) item XX score, 1right 0wrong	child	item	integer	ordinal	0=incorrect, 1=correct
jlitenv1/2	Literacy environment scale (twin web at 10), 1-4	child	derived	decimal	scale value	1 to 4
jmatenv1/2	Maths environment scale (twin web at 10), 1-4	child	derived	decimal	scale value	1 to 4
jmathat1/2	Maths test (10 year web) mean answer time (seconds)	child	derived	decimal	quantitative	approx. 0-100 seconds
jmatt1/2	Maths (10 year web) overall total score, 0-77	child	derived	integer	scale value	0 to 77
jmatta1/2	Maths (10 year web) adjusted overall total score, 0-77	child	derived	decimal	scale value	0 to 77
jmcat1t1/2	Maths (10 year web) category 1 (Understanding Numbers) total score, 0-27	child	derived	integer	scale value	0 to 27
jmcat2t1/2	Maths (10 year web) category 2 (Non-Numerical Processes) total score, 0-19	child	derived	integer	scale value	0 to 19
jmcat3t1/2	Maths (10 year web) category 3 (Computation and Knowledge) total score, 0-31	child	derived	integer	scale value	0 to 31
jmcat4t1/2	Maths (10 year web) category 4 (Mathematical Interpretation), cohort 1 only, total score, 0-33	child	derived	integer	scale value	0 to 33
jmcat5t1/2	Maths (10 year web) category 5 (Mathematical Application), cohort 1 only, total score, 0-24	child	derived	integer	scale value	0 to 24
jmdata1/2	Maths web test completed by child at 10, 1Y 0N	child	item	integer	nominal	0=no, 1=yes
jmsess1/2	Maths web test number of sessions at 10	child	item	integer	quantitative	approx. 1-15
jmstat1/2	Maths web test status at 10, see value labels	child	item	integer	nominal	0=not started, 1=started but not completed, 2=completed successfully, 4=completed but responded randomly
jmtime1/2	Maths web test time elapsed at 10, seconds	child	item	integer	quantitative	approx. 0-4000 seconds
jmXYYYa1/2 (XYYY is the item number, first digit X is the sub-test category 1-5)	Maths (10 year web) category X item XYYY response, see value labels	child	item	string	nominal	1=correct response, 2=incorrect response, 3=empty response, -1=timed out, -2=branched and credited, -3=discontinued, -4=crashed or malfunctioned
jmXYYYs1/2 (XYYY is the item number, first digit X is the sub-test category 1-5)	Maths (10 year web) category X item XYYY score, 1right 0wrong	child	item	integer	ordinal	0=incorrect, 1=correct
jpcdata1/2	Picture Completion web test completed by child at 10, 1Y 0N	child	item	integer	nominal	0=no, 1=yes
jpcsess1/2	Picture Completion web test number of sessions at 10	child	item	integer	quantitative	approx. 1-5
jpcstat1/2	Picture completion web test status at 10, see value labels	child	item	integer	nominal	0=not started, 1=started but not completed, 2=completed successfully, 4=completed but responded randomly
jpctime1/2	Picture Completion web test time elapsed at 10, seconds	child	item	integer	quantitative	approx. 0-1000 seconds
jpcXXa1/2 (XX is the item number: p1, 01-30)	Picture completion (10 year web) item XX response (grid square number, -1=timeout, - 2=discontinued, -3=credited, -4=crashed)	child	item	integer	nominal	1 to 120
jpcXXs1/2 (XX is the item number: p1, 01-30)	Picture completion (10 year web) item XX score, 1right 0wrong	child	item	integer	ordinal	0=incorrect, 1=correct
jpdata1/2	PIAT web test completed by child at 10, 1Y 0N	child	item	integer	nominal	0=no, 1=yes
jpiatat1/2	PIAT test (10 year web) mean answer time (seconds)	child	derived	decimal	quantitative	approx. 0-10 seconds
jpiatt1/2	PIAT (10 year web) total score, 0-82	child	derived	integer	scale value	0 to 82
jpiatta1/2	PIAT (10 year web) adjusted total score, 0-82	child	derived	decimal	scale value	0 to 82
jpicat1/2	Picture completion test (10 year web) mean answer time (seconds)	child	derived	decimal	quantitative	approx. 0-15 seconds
jpict1/2	Picture completion (10 year web) total score, 0-30	child	derived	integer	scale value	0 to 30
jpq01	Parent Web Qnr item 1, difficulty with maths in primary (10 year), see value labels	parent	item	integer	ordinal	0=none, 1=not much, 2=some, 3=quite a lot, 4=a great deal
jpq02	Parent Web Qnr item 2, extra help with maths in primary (10 year), see value labels	parent	item	integer	nominal	0=none, 1=one-to-one support in class, 2=extra teaching help, 3=other
jpq03	Parent Web Qnr item 3, self rating for maths in primary (10 year), see value labels	parent	item	integer	ordinal	0=above average, 1=somewhat above average, 2=average, 3=somewhat below average, 4=below average
jpq04	Parent Web Qnr item 4, difficulty with maths in secondary (10 year), see value labels	parent	item	integer	ordinal	0=none, 1=not much, 2=some, 3=quite a lot, 4=a great deal
jpq05	Parent Web Qnr item 5, how much maths in your work (10 year), see value labels	parent	item	integer	nominal	0=a great deal, 1=quite a lot, 2=some, 3=not much, 4=none, 5=never worked
jpq06	Parent Web Qnr item 6, help children with maths HW (10 year), see value labels	parent	item	integer	ordinal	0=a great deal, 1=quite a lot, 2=sometimes, 3=not much, 4=never
jpq07	Parent Web Qnr item 7, enjoyed maths in primary (10 year), see value labels	parent	item	integer	ordinal	0=loved it, 1=liked it a lot, 2=it was OK, 3=did not like it, 4=hated it
jpq08	Parent Web Qnr item 8, enjoyed maths in secondary (10 year), see value labels	parent	item	integer	ordinal	0=loved it, 1=liked it a lot, 2=it was OK, 3=did not like it, 4=hated it
jpq09	Parent Web Qnr item 9, did your sibs have problems with maths (10 year), see value labels	parent	item	integer	nominal	0=yes, 1=no, 2=not sure, 3=I do not have any siblings
jpq10	Parent Web Qnr item 10, difficulty with reading in primary (10 year), see value labels	parent	item	integer	ordinal	0=none, 1=not much, 2=some, 3=quite a lot, 4=a great deal
jpq11	Parent Web Qnr item 11, difficulty with reading in secondary (10 year), see value labels	parent	item	integer	ordinal	0=none, 1=not much, 2=some, 3=quite a lot, 4=a great deal
jpq12	Parent Web Qnr item 12, how often do you read for pleasure (10 year), see value labels	parent	item	integer	nominal	0=daily, 1=several times a week or less, 2=weekly, 3=do not read to myself
jpq13	Parent Web Qnr item 13, how often does partner read for pleasure (10 year), see value labels	parent	item	integer	nominal	0=daily, 1=several times a week or less, 2=weekly, 3=he/she doesn't read to him/herself, 4=I currently do not have a partner
jpq14	Parent Web Qnr item 14, how much reading in your work (10 year), see value labels	parent	item	integer	nominal	0=a great deal, 1=quite a lot, 2=some, 3=not much, 4=none, 5=never worked
jpqdata	Teacher questionnaire data present at 10, 1Y 0N	parent	item	integer	nominal	0=no, 1=yes
jpsess1/2	PIAT web test number of sessions at 10	child	item	integer	quantitative	approx. 1-10
jpstat1/2	PIAT web test status at 10, see value labels	child	item	integer	nominal	0=not started, 1=started but not completed, 2=completed successfully, 4=completed but responded randomly
jptime1/2	PIAT web test time elapsed at 10, seconds	child	item	integer	quantitative	approx. 50-4000 seconds
jpXXa1/2 (XX is the item number: r4, r5, p1-p5, t19-t100)	PIAT (10 year web) item XX answer selected, see value labels	child	item	integer	nominal	1 to 4
jpXXs1/2 (XX is the item number: r4, r5, p1-p5, t19-t100)	PIAT (10 year web) item r4 score, 1right 0wrong	child	item	integer	ordinal	0=incorrect, 1=correct
jq01a1/2	Twin web questionnaire (10 year) item 01, computer at home, 1Y 2N	child	item	integer	nominal	1=yes, 2=no
jq02a1/2	Twin web questionnaire (10 year) item 02, newspapers, 1Y 2N 3DK	child	item	integer	nominal	1=yes, 2=no, 3=don't know
jq03a1/2	Twin web questionnaire (10 year) item 03, TV on school day, see value labels	child	item	integer	ordinal	1=none, 2=one hour or less, 3=two or three hours, 4=more than three hours
jq04a1/2	Twin web questionnaire (10 year) item 04, books at home, see value labels	child	item	integer	ordinal	1=few (0-10), 2=enough to fill one shelf (11-25), 3=enough to fill one bookcase (26-100), 4=enough to fill several bookcases (more than 100)
jq05a1/2	Twin web questionnaire (10 year) item 05, talk about school at home, see value labels	child	item	integer	ordinal	1=never or hardly ever, 2=once every week, 3=about once a week, 4=two or three times a week, 5=every day
jq06a1/2	Twin web questionnaire (10 year) item 06, maths from text books at school, see value labels	child	item	integer	ordinal	1=never or hardly ever, 2=once or twice a month, 3=once or twic a week, 4=almost every day
jq07a1/2	Twin web questionnaire (10 year) item 07, maths in groups at school, see value labels	child	item	integer	ordinal	1=never or hardly ever, 2=once or twice a month, 3=once or twic a week, 4=almost every day
jq08a1/2	Twin web questionnaire (10 year) item 08, rulers etc at school, see value labels	child	item	integer	ordinal	1=never or hardly ever, 2=once or twice a month, 3=once or twic a week, 4=almost every day
jq09a1/2	Twin web questionnaire (10 year) item 09, talk about maths at school, see value labels	child	item	integer	ordinal	1=never or hardly ever, 2=once or twice a month, 3=once or twic a week, 4=almost every day
jq10a1/2	Twin web questionnaire (10 year) item 10, maths homework per day, see value labels	child	item	integer	ordinal	1=none, 2=fifteen minutes, 3=thirty minutes, 4=forty five minutes or more
jq11a1/2	Twin web questionnaire (10 year) item 11, talk about something read, see value labels	child	item	integer	ordinal	1=never or hardly ever, 2=once or twice a month, 3=once or twic a week, 4=almost every day
jq12a1/2	Twin web questionnaire (10 year) item 12, read for fun, see value labels	child	item	integer	ordinal	1=never or hardly ever, 2=once or twice a month, 3=once or twic a week, 4=almost every day
jq13a1/2	Twin web questionnaire (10 year) item 13, pages read per day, see value labels	child	item	integer	ordinal	1=none, 2=one to five, 3=six to ten, 4=more than ten
jq14a1/2	Twin web questionnaire (10 year) item 14, talk about reading at school, see value labels	child	item	integer	ordinal	1=never or hardly ever, 2=once or twice a month, 3=once or twic a week, 4=almost every day
jq15a1/2	Twin web questionnaire (10 year) item 15, write about reading at school, see value labels	child	item	integer	ordinal	1=never or hardly ever, 2=once or twice a month, 3=once or twic a week, 4=almost every day
jqdata1/2	Child web questionnaire completed by child at 10, 1Y 0N	child	item	integer	nominal	0=no, 1=yes
jqnrat1/2	Maths and reading questionnaire (10 year web) mean answer time (seconds)	child	derived	decimal	quantitative	approx. 0-50 seconds
jqsess1/2	Child web questionnaire number of sessions at 10	child	item	integer	quantitative	approx. 1-4
jqstat1/2	Child web questionnaire status at 10, see value labels	child	item	integer	nominal	0=not started, 1=started but not completed, 2=completed successfully
jqtime1/2	Child web questionnaire time elapsed at 10, seconds	child	item	integer	quantitative	approx. 0-1000 seconds
jravnat1/2	Raven test (10 year web) mean answer time (seconds)	child	derived	decimal	quantitative	approx. 0-50 seconds
jravt1/2	Raven (10 year web) overall total score, 0-60	child	derived	integer	scale value	0 to 60
jravta1/2	Raven (10 year web) adjusted overall total score, 0-60	child	derived	decimal	scale value	0 to 60
jrcatat1/2	Raven (10 year web) Category A total score, 0-12	child	derived	integer	scale value	0 to 12
jrcatbt1/2	Raven (10 year web) Category B total score, 0-12	child	derived	integer	scale value	0 to 12
jrcatct1/2	Raven (10 year web) Category C total score, 0-12	child	derived	integer	scale value	0 to 12
jrcatdt1/2	Raven (10 year web) Category D total score, 0-12	child	derived	integer	scale value	0 to 12
jrcatet1/2	Raven (10 year web) Category E total score, 0-12	child	derived	integer	scale value	0 to 12
jrdata1/2	Raven web test completed by child at 10, 1Y 0N	child	item	integer	nominal	0=no, 1=yes
jrsess1/2	Raven web test number of sessions at 10	child	item	integer	quantitative	approx. 1-10
jrstat1/2	Raven web test status at 10, see value labels	child	item	integer	nominal	0=not started, 1=started but not completed, 2=completed successfully, 4=completed but responded randomly
jrtime1/2	Raven web test time elapsed at 10, seconds	child	item	integer	quantitative	approx. 0-4000 seconds
jrXYYa1/2 (X is the sub-test category A-E, YY is the item number 01-12)	Raven (10 year web) item XYY answer selected, see value labels	child	item	integer	nominal	1 to 6 (for sub-tests A, B) or 1 to 8 (for sub-tests C, D, E)
jrXYYs1/2 (X is the sub-test category A-E, YY is the item number 01-12)	Raven (10 year web) item XYY score, 1right 0wrong	child	item	integer	ordinal	0=incorrect, 1=correct
jsamesch	Twins have same school at 10 (from admin database), 1Y 0N	admin	item	integer	nominal	0=no, 1=yes
jsametch	Twins have same teacher at 10 (from admin database), 1Y 0N	admin	item	integer	nominal	0=no, 1=yes
jt2a1/2	2-subject (English, Maths) academic achievement composite (10 year teacher), standardised	teacher	derived	decimal	scale value	approx. -3 to +3 (standardised)
jt3a1/2	3-subject overall academic achievement composite (10 year teacher), standardised	teacher	derived	decimal	scale value	approx. -3 to +3 (standardised)
jtcha011/2	Teacher Chaos item 1, very little noise (10 year), 1Y 0N	teacher	item	integer	ordinal	0=no, 1=yes
jtcha021/2	Teacher Chaos item 2, always rushed (10 year), 1Y 0N	teacher	item	integer	ordinal	0=no, 1=yes
jtcha031/2	Teacher Chaos item 3, on top of things (10 year), 1Y 0N	teacher	item	integer	ordinal	0=no, 1=yes
jtcha041/2	Teacher Chaos item 4, always running late (10 year), 1Y 0N	teacher	item	integer	ordinal	0=no, 1=yes
jtcha051/2	Teacher Chaos item 5, a real zoo (10 year), 1Y 0N	teacher	item	integer	ordinal	0=no, 1=yes
jtcha061/2	Teacher Chaos item 6, talk without interruption (10 year), 1Y 0N	teacher	item	integer	ordinal	0=no, 1=yes
jtcha071/2	Teacher Chaos item 7, distracting events (10 year), 1Y 0N	teacher	item	integer	ordinal	0=no, 1=yes
jtcha081/2	Teacher Chaos item 8, plans do not work out (10 year), 1Y 0N	teacher	item	integer	ordinal	0=no, 1=yes
jtcha091/2	Teacher Chaos item 9, can usually find things (10 year), 1Y 0N	teacher	item	integer	ordinal	0=no, 1=yes
jtcha101/2	Teacher Chaos item 10, cannot hear yourself think (10 year), 1Y 0N	teacher	item	integer	ordinal	0=no, 1=yes
jtcha111/2	Teacher Chaos item 11, a relaxing place (10 year), 1Y 0N	teacher	item	integer	ordinal	0=no, 1=yes
jtcha121/2	Teacher Chaos item 12, interruptions make it difficult (10 year), 1Y 0N	teacher	item	integer	ordinal	0=no, 1=yes
jtcha131/2	Teacher Chaos item 13, atmosphere is calm (10 year), 1Y 0N	teacher	item	integer	ordinal	0=no, 1=yes
jtcha141/2	Teacher Chaos item 14, always untidy (10 year), 1Y 0N	teacher	item	integer	ordinal	0=no, 1=yes
jtcha151/2	Teacher Chaos item 15, too many children (10 year), 1Y 0N	teacher	item	integer	ordinal	0=no, 1=yes
jtcha161/2	Teacher Chaos item 16, many adults in and out (10 year), 1Y 0N	teacher	item	integer	ordinal	0=no, 1=yes
jtcla11/2	Teacher Classroom item 1, likes to be (10 year), see value labels	teacher	item	integer	ordinal	0=not true, 1=somewhat true, 2=certainly true
jtcla21/2	Teacher Classroom item 2, friends care about work (10 year), see value labels	teacher	item	integer	ordinal	0=not true, 1=somewhat true, 2=certainly true
jtcla31/2	Teacher Classroom item 3, has fun (10 year), see value labels	teacher	item	integer	ordinal	0=not true, 1=somewhat true, 2=certainly true
jtcla41/2	Teacher Classroom item 4, friends try their best (10 year), see value labels	teacher	item	integer	ordinal	0=not true, 1=somewhat true, 2=certainly true
jtcla51/2	Teacher Classroom item 5, friends enjoy learning (10 year), see value labels	teacher	item	integer	ordinal	0=not true, 1=somewhat true, 2=certainly true
jtcla61/2	Teacher Classroom item 6, feels happy (10 year), see value labels	teacher	item	integer	ordinal	0=not true, 1=somewhat true, 2=certainly true
jtcla71/2	Teacher Classroom item 7, feels proud (10 year), see value labels	teacher	item	integer	ordinal	0=not true, 1=somewhat true, 2=certainly true
jtcla81/2	Teacher Classroom item 8, friends often in trouble (10 year), see value labels	teacher	item	integer	ordinal	0=not true, 1=somewhat true, 2=certainly true
jtclcha1/2	Classroom chaos scale (teacher at 10), 0-1	teacher	derived	decimal	scale value	0 to 1
jtclpec1/2	Classroom peer context scale (teacher at 10), 0-2	teacher	derived	decimal	scale value	0 to 2
jtclsat1/2	Classroom satisfaction scale (teacher at 10), 0-2	teacher	derived	decimal	scale value	0 to 2
jtdata1/2	Teacher questionnaire data present at 10, 1Y 0N	teacher	item	integer	nominal	0=no, 1=yes
jte1/2	English achievement composite (10 year teacher), standardised	teacher	derived	decimal	scale value	approx. -3 to +3 (standardised)
jtengre1/2	Teacher NC Rating at 10: English Reading, level 1 to 5	teacher	item	integer	ordinal	1-5 (National Curriculum levels)
jtengsp1/2	Teacher NC Rating at 10: English Speaking and Listening, level 1 to 5	teacher	item	integer	ordinal	1-5 (National Curriculum levels)
jtengwr1/2	Teacher NC Rating at 10: English Writing, level 1 to 5	teacher	item	integer	ordinal	1-5 (National Curriculum levels)
jtenyear	Parent web questionnaire data present at 10, 1Y 0N	parent, child, teacher	derived	integer	nominal	0=no, 1=yes
jtgoo011/2	Teacher How Good item 1, paying attention (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo021/2	Teacher How Good item 2, following spoken directions (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo031/2	Teacher How Good item 3, remembering things people say (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo041/2	Teacher How Good item 4, following what people say (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo051/2	Teacher How Good item 5, understanding words (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo061/2	Teacher How Good item 6, understanding new ideas (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo071/2	Teacher How Good item 7, establishing eye contact (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo081/2	Teacher How Good item 8, understanding facial expressions (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo091/2	Teacher How Good item 9, answering questions (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo101/2	Teacher How Good item 10, formulating questions (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo111/2	Teacher How Good item 11, variety of vocabulary (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo121/2	Teacher How Good item 12, finding the right word (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo131/2	Teacher How Good item 13, expressing thoughts (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo141/2	Teacher How Good item 14, describing things (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo151/2	Teacher How Good item 15, staying on the subject (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo161/2	Teacher How Good item 16, getting to the point (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo171/2	Teacher How Good item 17, putting events in the right order (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo181/2	Teacher How Good item 18, using good grammar (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo191/2	Teacher How Good item 19, talking complete sentences (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo201/2	Teacher How Good item 20, talking fluently (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo211/2	Teacher How Good item 21, expanding an answer when talking (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo221/2	Teacher How Good item 22, starting a conversation (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo231/2	Teacher How Good item 23, taking turns in conversation (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo241/2	Teacher How Good item 24, staying on topic (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo251/2	Teacher How Good item 25, talking with a group (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo261/2	Teacher How Good item 26, saying something another way (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo271/2	Teacher How Good item 27, sounding out new words (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo281/2	Teacher How Good item 28, understanding what was read (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo291/2	Teacher How Good item 29, explaining what was read (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo301/2	Teacher How Good item 30, identifying main ideas (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo311/2	Teacher How Good item 31, remembering details (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo321/2	Teacher How Good item 32, following written directions (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo331/2	Teacher How Good item 33, writing down thoughts (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo341/2	Teacher How Good item 34, good grammar when writing (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo351/2	Teacher How Good item 35, writing complete sentences (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo361/2	Teacher How Good item 36, writing fluently (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo371/2	Teacher How Good item 37, expanding an answer when writing (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtgoo381/2	Teacher How Good item 38, writing words in the right order (10 year), see value labels	teacher	item	integer	ordinal	1=very good, 2=quite good, 3=doing OK, 4=not so good, 5=not at all good
jtm1/2	Maths achievement composite (10 year teacher), standardised	teacher	derived	decimal	scale value	approx. -3 to +3 (standardised)
jtmatnu1/2	Teacher NC Rating at 10: Maths Number and Algebra, level 1 to 5	teacher	item	integer	ordinal	1-5 (National Curriculum levels)
jtmatsh1/2	Teacher NC Rating at 10: Maths Shape Space and Measures, level 1 to 5	teacher	item	integer	ordinal	1-5 (National Curriculum levels)
jtmatus1/2	Teacher NC Rating at 10: Maths Using and Applying, level 1 to 5	teacher	item	integer	ordinal	1-5 (National Curriculum levels)
jtottm1/2	Total time for all 10 year web tests if finished (minutes)	child	derived	decimal	quantitative	approx. 0-200 minutes
jtqage1/2	Age of twin (years) when 10yr teacher questionnaire returned	teacher	derived	decimal	quantitative	approx. 9.4 to 11 years
jtqLLCage1	Age of twin when 10yr teacher questionnaire returned (for use in LLC TRE), months	teacher	derived	integer	quantitative	approx. 113 to 128 (months)
jtqLLCdate1	Date when 10yr teacher questionnaire returned (for use in LLC TRE), yyyy-mm string	teacher	derived	string	date value	approx. '2004-05' to '2005-06'
jts1/2	Science achievement composite (10 year teacher), standardised	teacher	derived	decimal	scale value	approx. -3 to +3 (standardised)
jtscili1/2	Teacher NC Rating at 10: Science Life Processes, level 1 to 5	teacher	item	integer	ordinal	1-5 (National Curriculum levels)
jtsciph1/2	Teacher NC Rating at 10: Science Physical Processes, level 1 to 5	teacher	item	integer	ordinal	1-5 (National Curriculum levels)
jtscisc1/2	Teacher NC Rating at 10: Scientific Enquiry, level 1 to 5	teacher	item	integer	ordinal	1-5 (National Curriculum levels)
jtsen1/2	Teacher at 10: has a current Statement of SEN, 1Y 0N	teacher	item	integer	nominal	0=no, 1=yes
jtsenrg1/2	Teacher at 10: on the SEN Register, 1Y 0N	teacher	item	integer	nominal	0=no, 1=yes
jvdata1/2	Vocab web test completed by child at 10, 1Y 0N	child	item	integer	nominal	0=no, 1=yes
jvocat1/2	Vocab test (10 year web) mean answer time (seconds)	child	derived	decimal	quantitative	approx. 0-50 seconds
jvoct1/2	Vocabulary (10 year web) total score, 0-60	child	derived	integer	scale value	0 to 60
jvocta1/2	Vocabulary (10 year web) adjusted total score, 0-60	child	derived	decimal	scale value	0 to 60
jvsess1/2	Vocab web test number of sessions at 10	child	item	integer	quantitative	approx. 1-5
jvstat1/2	Vocabulary web test status at 10, see value labels	child	item	integer	nominal	0=not started, 1=started but not completed, 2=completed successfully, 4=completed but responded randomly
jvtime1/2	Vocab web test time elapsed at 10, seconds	child	item	integer	quantitative	approx. 0-1500 seconds
jvXXa1/2 (XX is the item number, 01-30)	Vocab (10 year web) item XX answer selected, see value labels	child	item	integer	nominal	1 to 3 (items 1-5) or 1-4 (items 6-30)
jvXXs1/2 (XX is the item number, 01-30)	Vocab (10 year web) item XX score, 2right 1partly right 0wrong	child	item	integer	ordinal	0=incorrect, 1=partially correct (second-best answer), 2=correct (best answer)