Brenda Y. Terrell

The role of input frequency in lexical acquisition.

The influence of frequency of occurrence in input upon early lexical acquisition was examined within an experimental paradigm. Twelve children (1; 0·21 to 1; 3·15) were presented with 16 contrived lexical concepts, each involving a nonsense word and four referents, over ten experimental sessions. Within each concept two exemplars were presented frequently and two were presented infrequently. Overall the children named more frequently presented exemplars than infrequently presented exemplars. However, when the absolute number of presentations was held constant, distributed (infrequent) presentations led to greater acquisition than massed (frequent) presentations.

Facilitation of Early Syntax through Discourse Structure.

The effect of an adult–child discourse structure on childrens production of word combinations was examined. Seventeen children at the singleword utterance level (1; 5–2; 1) served as subjects. An experimental group of six children were engaged in vertical structures over 10 sessions, while the remaining children served as a control group. Pre-tests and post-tests revealed a significant difference in the number of spontaneous and elicited multiword productions for the experimental group, but no difference for the control group.