“…Tables 1 and 2 about here Semantic-pragmatic disorder constitutes a form of higher-order processing impairment according to Rapin and Allen's (1987) and Rapin's (1996b) classification system. It is important to note, however, that pragmatic language impairment (impaired language use) can occur independently of semantic impairments and independently of the social and behavioural flexibility impairments associated with autism (Bishop, 1998;Bishop & Norbury, 2002;Botting & Conti-Ramsden, 1999). Thus, pragmatic language impairment appears to be, in part, dissociable from the structural language impairments of SLI (affecting phonology, grammar, and 2 Following Rapin and Allen's (1987) classifications, this list excludes a cluster labelled 'verbal dyspraxia' which constitutes a speech output problem rather than an impairment of structural language acquisition.…”