BCS70 – Age 10 – Spelling Dictation Task (SDT)

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The 1970 British Cohort Study (BCS70) assessed their cohort members (CMs) during the study’s age 10 sweep using the Spelling Dictation Task (SDT).

Details on this measure and the data collected from the CMs are outlined in the table below.


Domain:Verbal (spelling)
Measures:Dictation task measuring spelling and phonetic decoding
CHC:Gc (Crystallised ability)
Ga (Auditory processing)
Grw (Reading/Writing)
Administrative method:In schools; pen and paper
Procedure:A paragraph was dictated to the child including both real and made up words. A sentence could be repeated once and an imaginary word in the middle of the passage could be repeated twice.
Link to questionnaire:No direct link to questionnaire. Spelling booklet can be found in file 'a3723udb.pdf' accompanying data download from UK Data Service.
Scoring:Maximum score of 50 where the child was awarded a point for each correct spelling of a real word and a score of 1 for each syllable of the made up words.
Item-level variable(s):i3815 - i3864
Total score/derived variable(s):None
Age of participants (months):Mean = 121.88, SD = 2.67, Range = 117 - 139
Descriptives:Raw score
N = 12,489
Range = 0 - 50
Mean = 34.96
SD = 10.73
(click image to enlarge)
Other sweep and/or cohort:None
Source:Unknown
Technical resources:Parsons, S. (2014). Childhood cognition in the 1970 British Cohort Study, CLS Working Paper. London: Centre for Longitudinal Studies.
Reference examples:Miles, T. R., Wheeler, T. J., & Haslum, M. N. (2003). The existence of dyslexia without severe literacy problems. Annals of Dyslexia, 53(1), 340-354.

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