Cognitive measures in the 1946 National Survey of Health and Development

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Click on the individual cognitive measures in the table below to find out more.

Along with raw and normalised variables for each cognitive test in childhood, the NSHD contains three standardised summary variables (COG8H, COG11H, and COG15H). These were calculated by transforming the raw scores of each measure to standardised z-scores, summing these z-scores, then re-standardising this total score [29]. Thus, these derived variables provide a simple global cognitive functioning score.

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Explore the cognitive measures in other studies covered by this guide:

Explore the cognitive measures across studies by life stage:

Further information:


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