Stability of WISC-R scores in a juvenile forensic sample.
The temporal stability of WISC-R IQ Scale and subtest scores was examined in a Juvenile Court sample comprised primarily of neglected youth (N = 36). Stability coefficients were calculated for an average test-retest span of more than 2 years. WISC-R IQ Scale subtest scores were found to be stable to a degree comparable with WISC-R standardization data despite the considerably longer test-retest interval. Stability coefficients were .88 for Verbal IQ, .86 for Performance IQ, and .93 for Full Scale IQ. Subtest stability coefficients range from .49 to .82; many coefficients are equal to or greater than .70. No practice effects were apparent.
Haynes
J P
JP
Howard
R C
RC
D000293:Adolescent; D002648:Child; D005260:Female; D006801:Humans; D007360:Intelligence; D007604:Juvenile Delinquency / Q000523:psychology*; D008297:Male; D011594:Psychometrics; D014888:Wechsler Scales