The production of complex sentences by young and older adults with mild to moderate retardation

Abstract

This study examined the ability of young (mean CA = 29 years; SD = 3.67 years) and older adults (CA = 63 years; SD = 5.54 years) with mild to moderate mental retardation to produce complex sentences in naturalistic conversation. All of the complex sentences produced were coded into subcategories of complementation, relativization, or coordination. First, the overall proportion of complex utterances produced by each subject (based on the total number of utterances) was examined. Following this analysis, the well-formed production and productivity of the three general categories of complex sentences were considered. Individual complex sentences were then categorized by developmental level using Rosenberg and Abbeduto's (1987) acquisition scale. No significant differences were observed between the young and older groups.