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A Comparison Of The Illinois Test Of Psycholinguistic Abilities And The Parsons Language Sample In Assessing The Linguistic Functioning Of Institutionalized Mentally Retarded Children, Ralph Donald Lee Horner

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The purpose of this research was to compare the Illinois Test of Psycholinguistic Abilities and the Parsons Language Sample in assessing the linguistic functioning of institutionalized mentally retarded children. A stratified sample of mentally retarded children was administered both the ITPA and PLS in counterbalanced order. The results were correlated through the Pearson product-moment correlation coefficient and the correlation matrix analyzed through a principle-components factor analysis. The ITPA, PLS comparison produced high correlation coefficients with the exception of the Intraverbal Gesture sub-test of the PLS. The factor analysis of the correlation matrix revealed one or more sub-tests had high loadings …