Purpose: The purpose of this study was to document, validate, and corroborate effect size (ES) for single­-subject design in treatment of children with functional phonological disorders; to evaluate potential child-­specific contributing variables relative to ES; and to establish benchmarks for interpretation of ES for the population. Method: Data…

Three studies of phonological knowledge and generalization were conducted with six functionally misarticulating children, aged 3-4. Results indicated that productive phonological knowledge of the sound system influenced the amount of generalization learning. The extent of generalization learning was associated with the point on the knowledge…

Reports a method of clinically inducing a phonemic split in a misarticulating child. Three stages were observed in the acquisition of this split: (1) complementary distribution (allophones of the same phoneme); (2) position-specific free variation (intermediate to the phonemic split); and (3) phonemic distribution for some morphemes (phonemic…

Evidence of the positive outcomes of phonological treatment is reviewed, with particular emphasis on treatment procedures that have been deemed effective, the specific effects of these treatment on improving intelligibility, and comparisons between treatments in facilitating improved sound production. The effect of phonological disorders on…