Chunk #35 — Methods/Design — Participant Interview — Cognitive tests — Digit symbol coding

Source: The Lothian Birth Cohort 1936: a study to examine influences on cognitive ageing from age 11 to age 70 and beyond.
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This subtest from the Wechsler Adult Intelligence Scale-IIIUK [58] was used to assess speed of information processing. The participant enters a symbol according to a given number-symbol code, completing as many as possible in two minutes.