Classifying people into categories not only helps humans simplify a complex social world but also contributes to stereotyping and discrimination. This research examines how social categorization develops by testing how language imbues with meaning otherwise arbitrary differences between people. Experimental studies (N = 129) with 2-year-olds…

Working class and upper-middle class mothers were videotaped interacting with their toddlers in four settings. Samples of the mothers' adult-directed speech were also collected. Observed were social class differences in the mothers' child-directed speech and some parallel differences in the mothers' adult-directed speech. This may reflect more…

Investigates vocabulary acquisition in the context of joint picture-book reading in mother-infant dyads. Infants aged 17 to 22 months and their mothers, 20 middle-class and 20 lower-class dyads, were observed. In both groups interaction foucused on the eliciting or the provision of information. Results indicate several social class differences in…

Examined predictive properties of early language-learning experiences, parent socioeconomic status, and parenting skills on later academic performance in 29 toddlers from varying socioeconomic backgrounds. Variables predicted language and academic performance up to 10 years later in elementary school. Children whose early experiences led to…

Examined how child care experiences related to cognitive and language development from birth through age 3. Found that care quality was modestly related to cognitive and language outcomes, after adjusting for several factors. Cumulative experience in center-based care related to better outcomes than did experience in other care. Children in…