Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
Probabilistic risk is examined within appropriation and provision games. Using a menu design, subjects make decisions in multiple one-shot situations where the individual return or the group return is a random variable. Adding risk over the benefits of cooperation is found to significantly affect subjects’ decisions only in situations in the provision game type where the individual return is probabilistic. In those decision situations, cooperation increases.