Quality of performance feedback provided an individual may have pronounced impact on his motivation level and be at least partly responsible for social facilitation results. Male students (N=118) performed a dart-throwing task in the presence or absence of a three-person evaluative audience. After each of seven trials they received consistently positive, average, or negative performance feedback. Results showed a social facilitation effect of audience presence and initially facilitated performance under average feedback, but no interactions. Post-performance mood questionnaires suggest that separate mechanisms could mediate performance under each of the three feedback conditions. (Author)