Stability and Validity of Two Measures of Intelligence Used with Children Whose Language Development is Delayed An assessment was made of reliability and validity of the Arthur Adaptation of the Leiter International Performance Scale (AALIPS) and the Peabody Picture Vocabulary Test (PPVT) when used with preschool, language delayed children. The tests were used to examine a group of such children on three occasions. Six months elapsed ... Research Article
Research Article  |   June 01, 1971
Stability and Validity of Two Measures of Intelligence Used with Children Whose Language Development is Delayed
 
Author Affiliations & Notes
  • Paul S. Weiner
    University of Chicago, Chicago, Illinois
Article Information
Research Articles
Research Article   |   June 01, 1971
Stability and Validity of Two Measures of Intelligence Used with Children Whose Language Development is Delayed
Journal of Speech, Language, and Hearing Research, June 1971, Vol. 14, 254-261. doi:10.1044/jshr.1402.254
History: Received July 29, 1969
 
Journal of Speech, Language, and Hearing Research, June 1971, Vol. 14, 254-261. doi:10.1044/jshr.1402.254
History: Received July 29, 1969

An assessment was made of reliability and validity of the Arthur Adaptation of the Leiter International Performance Scale (AALIPS) and the Peabody Picture Vocabulary Test (PPVT) when used with preschool, language delayed children. The tests were used to examine a group of such children on three occasions. Six months elapsed between the first two administrations and approximately two years, on the average, between the first and third. On the last occasion, the Wechsler Intelligence Scale for Children (WISC) was also administered. The AALIPS proved to be quite useful as a gauge of intelligence level for this population. Measurements on it were stable through time and also predictive of later functioning on the WISC, particularly on the nonverbal section of that test. Useful in the group study, the AALIPS was also helpful in individual cases if interpretations were limited to judgments of normal and subnormal functioning. The PPVT was equally stable as a measure of group functioning. However, it was much less successful in predicting later functioning on the verbal section of the WISC. It seems to be much more limited than the AALIPS as a measure of intellectual functioning of preschool, language delayed children. Its scope is a restricted though possibly helpful one.

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