The Determiners of Energy Expenditure in String-Pulling by the Rat

A follow-up was made of 18 male dyslexic children (RDs) and a group of matched controls (Cs), who had all been judged free from emotional and school adjustment problems two years earlier, (a) to see if RDs' reading deficit had been overcome, (b) to measure “emotional overlay,” and (c) to find predictors of success in learning to read. Results showed that at the time of the follow-up (a) none of the RDs had overcome his reading disability despite remediational efforts; (b) RDs had significantly lower achievement levels and significantly more adjustment problems than Cs; (c) low scores for WISC Full Scale IQ, Vocabulary subtest, and Coding subtest were associated with large reading deficits two years later; and (d) high WISC Arithmetic and Coding subtest scores were associated with large gains in reading skill. Physiological measures did not predict size of deficit or gain in reading skill over time.