Psycholinguistic Training Programs: Are There Differential Treatment Effects?

The findings of an investigation assessing the differential effects of psycholinguistic training programs are reported. Methodologically, meta‐analysis, the analysis of analyses, was used to determine whether psycholinguistic training programs differentially affect the abilities measured by the Illinois Test of Psycholinguistic Abilities (ITPA). When findings were integrated by ITPA subtests, ITPA constructs, and salient study features, the training programs were found to differ with respect to improving psycholinguistic abilities. Overall results, however, indicated that the Peabody Language Development Kits (PDLK) were more consistently advantageous than either ITPA related programs or other types of training activities (e.g. structured teaching and perceptual‐motor approaches). These findings were validated in a multiple regression analysis comparing the three intervention methods. It was suggested that the structured and sequential nature of the PDLK was the major factor contributing to its greater effectiveness.