Looking times of 96 preschoolers were recorded as they were habituated on slides of sex-typed toys. After habituation, subjects were shown a test series of 24 slides containing the 6 habituated (familiar) slides, a set of 6 new slides from the same subcategory (similar), a set of 6 slides from the other subcategory of toys (opposite), and 6 from a new category of animal slides (novel). A ... [Show full abstract] generalized habituation gradient was present for subcategories and was steeper for younger children than for older children. There was a preference for same sex-typed toy stimuli, with stronger preference found in males than in females. Individual differences in habituation were examined by dividing subjects into slow habituators, rapid habituators, and short lookers. Results show differences between the three groups in response to the test slides, with rapid habituators exhibiting significant trends in support of the discrepancy hypothesis.