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Measuring stability and change in WISC‐R IQS
Author(s) -
Atkinson Leslie
Publication year - 1990
Publication title -
psychology in the schools
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.738
H-Index - 75
eISSN - 1520-6807
pISSN - 0033-3085
DOI - 10.1002/1520-6807(199007)27:3<185::aid-pits2310270302>3.0.co;2-l
Subject(s) - psychology , wechsler intelligence scale for children , developmental psychology , intelligence quotient , test validity , test (biology) , psychometrics , clinical psychology , cognition , psychiatry , paleontology , biology
Webster (1988) assessed WISC‐R IQ stability in samples of adolescents identified as EMR and LD. It is argued here that Webster used an inappropriate standard error of measurement in his study. This resulted in magnified estimates of the number of individuals who obtained significantly discrepant IQs from one test admnistration to the next. Webster's analyses therefore exaggerated the degree of test‐retest instability inherent in WISC‐R IQs.