Differentiating phonological delay from phonological disorder: Executive function performance in preschoolers.

The results of this study suggest that children with phonological delay and phonological disorder have distinct patterns of performance on executive function tasks: Children with phonological disorder showed deficits in domain general rule-abstraction and cognitive shift when compared to children with phonological delay. WHAT ARE THE POTENTIAL OR ACTUAL CLINICAL IMPLICATIONS OF THIS WORK?: The findings draw attention to: (1) the importance of differential diagnosis of phonological delay and phonological disorder; (2) the role of domain-general cognitive processes in explaining why children make particular types of errors; and (3) the need to develop innovative and tailored intervention techniques that target specific underlying deficits.