Hand movement trajectories illustrate the mechanism underlying Kurt Lewin’s distinction between approach–approach and avoidance–avoidance motivational conflicts.

Classic motivational conflicts theory (Lewin, 1931) distinguishes between approach-approach, and avoidance-avoidance conflicts. Previous research has focused solely on testing the theory's prediction that avoidance-avoidance conflicts are more difficult to resolve than approach-approach ones, using outcome measures (decision time and self-reports). The theory, however, specifies a force-fields mechanism to account for this difference in conflict resolution difficulty, whereby avoidance-avoidance conflicts (compared to approach-approach ones) elicit more (a) oscillations and (b) return to the middle point between options. However, this force-fields mechanism has never been empirically tested, arguably due to a lack of the tools to do so. In five studies (