There is evidence that, when given simple musical instruments, young children construct pretend play episodes centered on the shape of the objects rather than their sounds. This attention to shape has also been observed when children learn the names of novel objects. Such a "shape bias", when engaging in pretend play with instruments and during linguistic tasks, may indicate the possibility that shape is a perceptually important attribute across contexts. The aim of this study was to determine whether children favor shape, color, or sound when identifying a novel object.

In two studies, 3- to 5-year-olds were shown target objects that were given a novel name and shared one attribute (e.g., shape, sound) with test objects. During one trial, the objects were shaken to produce sound, and during another, the children manipulated the objects in order to produce sounds. In both experiments, children selected based on shape significantly more often (p < .001) than chance rates, indicating a strong bias toward the shape of a novel object rather than the sound it produces during a cognitive task.