FIGURE 5.5 Object segregation Infants who see the combination of elements in (a) perceive two separate objects, a rod moving behind a block. After habituating to the display, they look longer at two rod segments than at a single rod (b), indicating that they find the single rod familiar but the two segments novel. If they first see a display with no movement, they look equally long at the two test displays. This result reveals the importance of movement for object segregation. (From Kellman & Spelke, 1983)