The autism spectrum disorder phenotype varies by social and communication ability and co-occurring developmental, behavioral, and medical conditions. Etiology is also diverse, with myriad potential genetic origins and environmental risk factors. Examining the influence of parental broader autism phenotype--a set of sub-clinical characteristics of…

Purpose: A recent approach to identifying early markers of risk for autism spectrum disorder (ASD) has been to study infants who have an older sibling with ASD. These infants are at heightened risk (HR) for ASD and for other developmental difficulties, and even those who do not receive an eventual ASD diagnosis manifest a high degree of…

Many children diagnosed with autism spectrum disorder who receive early intervention reap developmental benefits, but little is known about characteristics of early intervention placements in the community that optimize individual growth. The extent to which children hear and use language, in particular, may contribute significantly to…

Producing pronouns involves linguistic and social-cognitive knowledge because children must learn words and understand pronouns' changing referents. This study examined pronoun production longitudinally in young children with autism spectrum disorder (ASD; n = 15), whose social-cognition might impair pronoun use, and in typically developing (TD; n…

Little is known about outcomes of early intervention for children with autism spectrum disorder reared in bilingual homes. There are concerns that social communication deficits among children with autism spectrum disorder may reduce the developmental benefits of early intervention for children with autism spectrum disorder raised in bilingual…

Background: Nonverbal communication abilities, including gesture use, are impaired in autism spectrum disorder (ASD). However, little is known about how common gestures may influence or be influenced by other areas of development. Aims: To examine the relationships between gesture, fine motor and language in young children with ASD compared with a…

The development of imitation during the second year of life plays an important role in domains of sociocognitive development such as language and social learning. Deficits in imitation ability in persons with autism spectrum disorder (ASD) from toddlerhood into adulthood have also been repeatedly documented, raising the possibility that early…

Thirty-five children diagnosed with autism or pervasive developmental disorders at age 2 were re-evaluated 2 years later for factors related to spoken language development including child variables and environmental variables. After controlling for age 2 language skills, the only significant predictors of age 4 language skills were motor imitation…