What was the outcome for students told they succeeded on a project in the Ross and Sicoly study?

In the Ross and Sicoly study, students who were informed that they had succeeded on a project were found to estimate that they contributed significantly to that success, often indicating percentages that reflected a strong sense of personal involvement. Specifically, they estimated their contribution to be around 80%. This finding demonstrates the phenomenon of "self-serving bias," where individuals attribute positive outcomes to their own actions while downplaying the contributions of others. The heightened sense of ownership over the project correlates with the feedback they received, reinforcing their belief in their abilities and contributions. This illustrates how success can lead to inflated perceptions of one's involvement, shaping the way individuals perceive their own contributions in collaborative settings.