Similarity in cognitive ability measurement at age 7-8

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Explore where selected cohorts overlapped in their assessment of cognitive abilities at the ages of 7 to 8.

For background guidance on the table below, see the main harmonisation feasibility page in this guide.

Ability domainNSHD (Age 8)NCDS (Age 7)ALSPAC (Age 7.5)ALSPAC (Age 8.5)MCS (Age 7)
Gf (Fluid ability)Picture IntelligenceWechsler Intelligence Scale for Children (WISC-III)
  • Object Assembly
Gc (Crystallised ability)VocabularyWechsler Intelligence Scale for Children (WISC-III)

  • Picture Completion

  • Information

  • Comprehension

  • Vocabulary

  • Similarities

Listening Comprehension
Oral Expression
Gc/Gf (Crystallised ability/ Fluid ability)Wechsler Intelligence Scale for Children (WISC-III)
  • Picture Arrangement
Gc/Grw (Crystallised ability/ Reading & writing)Reading ComprehensionSouthgate Group Reading TestBasic ReadingBAS II Word Reading
Phoneme Deletion Task
Grw (Reading & writing)Word ReadingSpelling Task
Gq (Quantitative knowledge)Problem Arithmetic TestWechsler Intelligence Scale for Children (WISC-III)
  • Arithmetic
NFER Progress in Maths (adapted)
Gv (Visual processing)Copying Designs TestBAS II Pattern Construction
Human Figure Drawing
Gs/Gv (Processing speed/ Visual processing)Letter Decision TaskWechsler Intelligence Scale for Children (WISC-III)
  • Coding
Wechsler Intelligence Scale for Children (WISC-III)
  • Block Design
TEACh (the Tests of Everyday Attention for Children)

  • Selective Attention and Motor Control: Sky Search

  • Dividing Attention (Dual Task)
Gp (Psychomotor ability)Motor Ability Task
Gkn (Domain-specific knowledge)DANVA: Faces subtest
Gsm (Short-term memory)TEACh (the Tests of Everyday Attention for Children):

  • Selective Attention and Motor Control: Sky Search

  • Dividing Attention (Dual Task)

  • Attentional Control (Opposite Worlds)
Nonword Repetition
Glr (Long-term storage & retrieval)Listening Comprehension
Ga (Auditory processing)Articulatory Skills

Additional detail on the individual measures is available in the childhood cognition section of this guide.

Explanations of the ability domains are provided in the introductory section.


Explore where similar cognitive abilities have been measured across the studies at other ages:

Explore the full set of cognitive abilities assessed by each of the cohort studies in this guide:


This page is part of CLOSER’s ‘A guide to the cognitive measures in five British birth cohort studies’.