Considerable evidence indicates that shape similarity plays a major role in object recognition, identification and categorization. However, little is known about shape processing and its development. Across four experiments, we addressed two related questions. First, what makes objects similar in shape? Second, how does the processing of shape…

Two experiments examined preschoolers' and adults' relative reliance on visual and verbal information in identification of animals and machines. Findings include both children and adults can use either visual or verbal cues in categorization, and a stricter definition is used in identifying animals. Results suggest that a perceptual to conceptual…

Three experiments explored preschoolers' developing knowledge of stable (identity, gender, and race), changeable (mood, weight, and health), and changeable-but-irreversible (age and height) characteristics when knowledge of those characteristics was tested verbally rather than pictorially. Found that children make systematic rather than random…

Three experiments compared the assignment of gender to masculine and feminine pictured objects as classified by Spanish grammatical gender, by English- and Spanish-speaking children, and by adults. Results revealed artificial-male/natural female conceptual division among speakers of English and delayed effects of grammatical gender among speakers…