Habitual Behavior Is Goal-Driven.

We address the relation between goal-driven and habitual behaviors. Whereas in recent years the two have been juxtaposed, we suggest that habitual behavior is in fact goal-driven. To support this view, we show that habitual behavior is sensitive to changes in goal properties (reward contingencies), namely goal value and its expectancy of attainment. Whereas adjustment to these properties may be slower for habitual (or overlearned) than for nonhabitual behavior, this is likely due to the routinized (or automatic) nature of such behavior, characterized as it is by reduced attention to its consequences. Furthermore, we show that habitual behavior's prolonged persistence despite its manifest detachment from the original goal likely stems from its attachment to a different goal. Thus, there is no need to postulate purposeless behavior. The view that habitual behavior is goal-driven offers an integrative account of a considerable body of evidence and is consistent with a functional account of psychological processes.