1970 British Cohort Study (BCS70): Cohort member's child assessment data

Information about children was gathered from the cohort member by interview and self-completion, and from the children using child assessments for all those aged 3<17 years, and by self-completion for all aged 10<17 years. The child assessments were adapted from the British Ability Scales Second Edition (BAS II) 4, a well-respected and widely-used educational assessment tool, normally used by educational psychologists in a classroom or clinical setting to examine cognitive development and educational attainment.