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Similarity in cognitive ability measurement at age 7-8

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 domain NSHD (Age 8) NCDS (Age 7) ALSPAC (Age 7.5) ALSPAC (Age 8.5) MCS (Age 7)
Gf (Fluid ability) Picture Intelligence Wechsler Intelligence Scale for Children (WISC-III)
  • Object Assembly
Gc (Crystallised ability) Vocabulary Wechsler 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 Comprehension Southgate Group Reading Test Basic Reading BAS II Word Reading
Phoneme Deletion Task
Grw (Reading & writing) Word Reading Spelling Task
Gq (Quantitative knowledge) Problem Arithmetic Test Wechsler Intelligence Scale for Children (WISC-III)
  • Arithmetic
NFER Progress in Maths (adapted)
Gv (Visual processing) Copying Designs Test BAS II Pattern Construction
Human Figure Drawing
Gs/Gv (Processing speed/ Visual processing) Letter Decision Task Wechsler 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.

In this section

Similarity in cognitive ability measurement at age 7-8