Communicative Function of Pointing and Expressive Vocabulary Acquisition

Abstract

Abstract There is evidence of a strong association between the pointing gesture and early vocabulary acquisition. This study examined the extent to which this association is moderated by the communicative function of children’s pointing. A total of 35 children participated in the study. Their use of the pointing gesture and their expressive vocabulary were assessed at 13 and 18 months using the Early Social Communication Scales and the MacArthur-Bates Communicative Development Inventory, respectively. The results of multiple linear regression analyses indicated that variations in the frequency of declarative pointing at 13 months significantly contributed to variations in vocabulary size at both 13 and 18 months, independently of variations in maternal education. In contrast, variations in the frequency of imperative pointing did not concurrently or longitudinally correlate with children’s vocabulary sizes. These results suggest that the relation between pointing and early vocabulary acquisition is moderated by the communicative function of the pointing gesture.