This longitudinal case study follows the development of a woman with autism from mutism at age 10 to acquisition of a range of spoken and written language skills by age 26. Results support hypotheses that both spoken and written language may become feasible forms of communication in such cases, although some skills may plateau or decline.…

This study compared spoken and written narratives of school-age children (N=20) with language learning disabilities (LLD) with chronological age (CA) and language-age (LA) peers. For the spoken summary, productivity measures and grammatical complexity were significantly lower for children with LLD than for CA children. Expository writing was…

This study examined keyword signing (KWS), a communication approach used with nonspeaking individuals. Acoustic measures and judgments of 20 adult listeners were used to evaluate KWS and Spoken-Only narratives. KWS narratives were produced with a slower articulation rate, because of increased pause and speech segment duration and increased pause…

Twenty-three children (ages 10 to 12) with language impairment and 46 typically achieving adults participated in two auditory lexical-decision tasks evaluating effects of phonological opacity on word recognition. Findings indicated that the language-impaired children were less able than controls to identify phonologically opaque…

This study compared the effect of productivity (a correlate of suffix frequency) on derivational suffix use in 69 elementary and middle school students' derivational suffix use. Twenty-three students had language-learning disabilities (LLD). Students with and without LLD used highly productive suffixes but LLD students were less accurate in…

Two experiments with 40 children (grades 4 to 8) found the children often used their knowledge of derivational suffixes in defining low-frequency derivatives, and knowledge of suffixes was significantly correlated with suffix production in a nonsense task. The children's morphological awareness of derivational suffixes included semantic…