Abstract
Self-Determination Theory argues that autonomy plays a major role in intrinsic motivation. Autonomy can be operationalized as choice. Whether positive effects on motivation are caused by the mere act of choosing or by confounding variables is still unclear. In this study (N = 299, Mage = 13.1 ± 0.6 years), students could work with two polarizing animals. The first group was allowed to choose (choosing & match), two groups were not. In these groups, the teacher allocated the animals to the students resulting in a second group that received the wanted animal (no choosing & match), and a third group that received the unwanted animal (no choosing & no match). Situational motivation and flow experience were assessed. Regarding intrinsic motivation and flow, students in the no choosing & match treatment scored the highest, students of the no choosing & no match group the lowest. In conclusion, matching and not choosing made the difference.