Abstract
In this experiment, 23 preschool children participated in two adult-child shared storybook reading sessions over a 1-week period. The objective was to characterize the influence of various conditions of word exposure upon children's receptive and expressive learning of novel words occurring within storybook reading interactions. Specifically, the effects of two contrasting conditions were examined: (a) adults' questioning versus labeling of novel words, and (b) adults' use of perceptual versus conceptual questions about novel words. Results suggested that adults' labeling of novel words facilitated children's receptive word learning more so than questioning; however, this effect was not observed for expressive word learning. Results also suggested no difference in receptive or expressive word learning as a result of conceptual versus perceptual questions. Implications of these findings are discussed.