The Avon Longitudinal Study of Parents and Children (ALSPAC) assessed their cohort members (CMs) during the study’s age 7.5 sweep (Focus@7) using the Phoneme Deletion Task.
Details on this measure and the data collected from the CMs are outlined in the table below.
|Domain:||Verbal ability (language repetition)|
|Oral production and fluency|
|CHC:||Gc (Crystallised Intelligence)|
|Administration method:||Trained interviewer; clinical setting; answers orally|
|Procedure:||Children were presented with a word, and then asked to repeat the word, and then say it again with part of the word missing, e.g. 'sour' without the 's' = 'our'. The task began with 2 practice trials, followed by 40 test trials, each of which increased in difficulty. The number of correctly spoken items was recorded.|
|Link to questionnaire:||http://www.bristol.ac.uk/alspac/researchers/our-data/clinical-measures/ (opens in new tab)|
|Scoring:||Correct items (0 - 40)|
|Item-level variable(s):||Not readily available|
|Total score/derived variable(s):||f7ws191 - f7ws220|
|N = 8,074|
|Range = 0 - 40|
|Mean = 20.05|
|SD = 9.53|
|(click image to enlarge)
|Age of participants:||Mean = 90.5 months, SD = 3.83, Range = 82 - 113|
|Other sweep and/or cohort:||None|
|Source:||Rosner, J., & Simon, D. P. (1971). The auditory analysis test: An initial report. Journal of Learning disabilities, 4(7), 384-392.|
|Reference examples:||Powers, N. R., Eicher, J. D., Butter, F., Kong, Y., Miller, L. L., Ring, S. M., ... & Gruen, J. R. (2013). Alleles of a polymorphic ETV6 binding site in DCDC2 confer risk of reading and language impairment. The American Journal of Human Genetics, 93(1), 19-28.|
|Eicher, J. D., Powers, N. R., Miller, L. L., Mueller, K. L., Mascheretti, S., Marino, C., ... & Pennington, B. F. (2014). Characterization of the DYX2 locus on chromosome 6p22 with reading disability, language impairment, and IQ. Human Genetics, 133(7), 869-881.|
- Overview of all cognitive measures in ALSPAC
- Overview of childhood cognitive measures across all studies
This page is part of CLOSER’s ‘A guide to the cognitive measures in five British birth cohort studies’.