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…

In this study we examined early motor, vocal, and communicative development in a group of younger siblings of children diagnosed with autism (Infant Siblings). Infant Siblings and no-risk comparison later-born infants were videotaped at home with a primary caregiver each month from 5 to 14 months, with follow-up at 18 months. As a group, Infant…

Attempts to determine whether children can use social-pragmatic cues to determine "what kind" of referent, object, or action an adult intends to indicate with a novel word. Doubts that children assume that a novel word refers to whatever nameless object is present. Suggests that lexical acquisition rests fundamentally on children's…

Examines whether knowledge of functional properties of a referent for a new name influences children's first guesses about whether that name refers to an object or a substance. Suggests that children do not rely on a single source of information, but rather draw on various kind of information, including perceptual characteristics of the entities…

Seven 18- to 32-month-old children received from seven to 26 experimental sessions each between October 1966 and April 1967. A session lasted from 5 to 15 minutes and concerned control over the verbal responses of the children with token-operated reinforcement devices. In order to make the results of the experimental sessions meaningful, an…

To determine the relative effectiveness of different methods of preschool educational intervention for disadvantaged children, comparisons were made of five programs whose levels of structure ranged from the traditional nursery school to a highly structured preschool. Subjects were 79 4-year-olds representing a wide range of ability levels.…

One of several guides developed by the California Department of Education for caregivers in centers and family child care homes, this guide offers information based on current theory, research, and practice that will support the language development and communication of infants and toddlers and their families. Each of the five sections focuses on…

Discusses pre-linguistic and linguistic stages of language acquisition that are part of a continuum of receptivity and communication every child experiences in the first 3 years of life. Suggests parents assist language development by being sympathetic to each developmental turning point, providing the right emotional climate for expression, and…