Conversational profiles of children with ADHD,SLI and typical development

Conversational indices of language impairment were used to investigate similarities and differences among children with Attention‐Deficit/Hyperactivity Disorder (ADHD), children with Specific Language Impairment (SLI) and children with typical development (TD). Utterance formulation measures (per cent words mazed and average number of words per maze) differentiated the ADHD group from the SLI and TD groups (ADHD>TD=SLI). In contrast, measures of lexical diversity, average sentence length and morphosyntactic development (number of different words, MLU, and composite tense) differentiated the SLI group from the ADHD and TD groups (SLI