Naturalistic studies show that children can create language-like communication systems in the absence of conventional language. However, experimental evidence is mixed. We address this discrepancy using an experimental paradigm that simulates naturalistic sign creation. Specifically, we tested if a sample of 6- to 12-year-old children (52 girls…

This article provides an estimation of how frequently, and from whom, children aged 0-11 years (Ns between 9 and 24) receive one-on-one verbal input among Tsimane forager-horticulturalists of lowland Bolivia. Analyses of systematic daytime behavioral observations reveal < 1 min per daylight hour is spent talking to children younger than 4 years…

Daylong at-home audio recordings from 10 Tseltal Mayan children (0;2-3;0; Southern Mexico) were analyzed for how often children engaged in verbal interaction with others and whether their speech environment changed with age, time of day, household size, and number of speakers present. Children were infrequently directly spoken to, with most…

Using an epidemiological sample (N = 1,117) and a prospective longitudinal design, this study tested the direct and indirect effects of preverbal and verbal communication (15 months to 3 years) on executive function (EF) at age 4 years. Results indicated that whereas gestures (15 months), as well as language (2 and 3 years), were correlated with…

The data from this study shows that fathers spend little time vocalizing to their infants and that the number of interactions varies by time of day, age and sex of infant and the kind of activity occurring during the interaction. (Author/WY)

Results indicate that normative data derived from observations of same-age interaction may not be generalized to the mixed-age situation and that the two types of social experience may serve different functions in children's development. (Author/JMB)

A sample of 90 children in kindergarten, second, and fourth grades were presented with ambiguous referential communication messages and asked to judge the quality of the messages. (Author/JMB)

A sharp improvement in children's understanding of the role of visual perception and linguistic communication in knowledge functions was found between the ages of three and five years. (PCB)

Reports three experiments based on the hypothesis that qualitative changes in verbal reasoning emerge, not from the conclusions children draw, but from what they accept as conclusive evidence. Results show a gradual development across 7-13 age range in ability to distinguish logically certain from only suggested or probabilistic conclusions.…

Children's ability to produce integrated sequences of discrete behaviors was examined as a function of age and task demands for several behavioral domains. Results are discussed in terms of possible age-related constraints on combinatorial skills that operate at a general, cross-domain level during toddlerhood. (RH)

Social play emerged earlier than social pretend play with a similar structure; the incidence of social pretend play increased with age. Four strategies for integrating pretense into social play were isolated; among them, verbal recruitment and "join" were found to be more effective than imitation or nonverbal recruitment. (Author/RH)

Examines personal relevance in relation to the ability of 48 5- to 10-year-old children to describe others in terms of psychological characteristics. Results suggest that verbal inferencing skills of young children have been underestimated and that they may be more oriented toward affective goals than older children when anticipating interaction…

Examined responses of 6- to 7- and 9 to 10-year olds to adult-child conflict, compared them to responses to adult-adult conflict, and further examined responses in relation to verbal and physical expression of anger. Participants in the conflict, the form of anger, and the age and gender of the subject moderated some responses. (DR)