Combinatorial abilities in language and elicited symbolic play were compared in a longitudinal study of 30 children at 20 and 28 months. In addition, multivariate analyses were used to assess the stability of individual differences. Generally, different symbolic play variables contributed unique explained variance to different language variables.…

Investigated whether the content of infant speech productions is better characterized as preserving stressed and final syllables or as preserving a trochaic pattern; used a detailed longitudinal description of one child's syllable omission. Found that the trochaic template hypothesis was not supported by these early productions. (Author/JPB)

Tests the universality hypothesis of language acquisition by asking young monolingual English and Japanese children to verify true affirmatives, false affirmatives, false negatives, and true negatives. The hypothesis was not supported in the case of Japanese-speaking children. A theory of cross-linguistic language acquisition is proposed.…

Longitudinal and cross-sectional studies of young English-, French-, and Korean-speaking children showed that, across the three languages, children go through three similar developmental stages before they acquire the adult system of answering negative questions. Several language-specific phenomena were observed. (BC)