Abstract
Although it is generally accepted that labels facilitate categorization in infancy, recent evidence suggests that infants and young children are more likely to process visual input when presented in isolation than when paired with nonlinguistic sounds or linguistic labels. These findings suggest that auditory input (when compared to a no-auditory baseline) may hinder rather than facilitate categorization. This study assessed 8-month-olds' (n = 191) and 12-month-olds' (n = 81) abilities to form categories when images were paired with nonlinguistic sounds, linguistic labels, and when presented in isolation. Overall, infants accumulated more looking when visual stimuli were accompanied by sounds or labels; however, infants were more likely to categorize when the visual images were presented without an auditory stimulus.
Notes
*p < .05, different from initial preference.
1A follow-up experiment with 10 8-month-olds (5 boys and 5 girls, M = 247 days, range = 237–261 days), none of whom participated in Experiment 1, indicated that 8-month-olds ably discriminated the individual cats and bears that were presented during the testing phase of Experiment 1, t(9) = 3.87, p < .005.
*p < .05, different from initial preference.