Twelve 21/2-year-old children received adult verbal intervention selectively directed toward acquisition of either question forms or verb forms. Findings showed that children who received verb intervention acquired new verb structures while children who received question intervention acquired new forms of questions. (Author/JMB)

Two studies were conducted, one to judge the relative ages of pairs of vocalizations from Chinese and American infants of varying ages, the other to judge the linguistic community of the vocalizer when age was held constant. Judgments were highly accurate in the first study, but not in the second. (Author/RM)

This research review sought to discover the forms of family verbal interaction that nurture language development in infants and toddlers, the function of different family members in this process, and the role of environmental factors in language development. Results indicate that speech to a child is significantly different from speech to an…