Similarity in cognitive ability measurement at age 46-53

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Explore where selected cohorts overlapped in their assessment of cognitive abilities at the ages of 46 to 53.

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

Ability domainNSHD (Age 53)NCDS (Age 50)BCS70 (Age 46)
Gc/Grw (Crystallised ability/ Reading & writing)National Adult Reading Test (NART)
Glr (Long-term storage & retrieval) - Verbal memoryImmediate and Delayed Verbal Learning/ Word List Recall TestImmediate and Delayed Verbal Learning/ Word List Recall TestImmediate and Delayed Verbal Learning/ Word List Recall Test
Glr (Long-term storage & retrieval) - Verbal fluency/ executive functionVerbal Fluency (Animal Naming)Verbal Fluency (Animal Naming)Verbal Fluency (Animal Naming)
Gv/Gs (Visual processing/ Processing speed)
- Visual processing speed
Timed Letter Search/Letter Cancellation TestTimed Letter Search/Letter Cancellation TestTimed Letter Search/Letter Cancellation Test

Additional detail on the individual measures is available in the adulthood 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’.