  What clues do babies use to determine if a perceived motion is goal-directed? The previous study suggests that they are finely tuned to complex patterns of self-directed bodily activity.  One might hypothesize that babies first restrict their attributions of goals to humans only and then, with experience, extend the range to include non-humans as well (Woodward 2005; Meltzoff 2005). But a recent study, however, suggests that this may not be so. In this study (Luo &amp; Baillargeon 2005), babies reliably attributed goals to a moving box, which they were previously shown could move on its own. The key difference between the rod/sponge in Woodward’s study and the moving box in this study appears to be information about autonomous motion. The rod/sponge never showed such capacity; the moving box did. Autonomous motion, the authors argue, signals an object’s status as an agent, and agents, for the baby, have goals. These results have recently been extended to 3-month-olds (Luo 2011).