The leaderless group discussion (LGD) has been used extensively for assessing leadership potential in a group setting. Personality measures administered prior to LGD have produced low correlations with effective LGD task behaviors in previous research. In addition to assessing characteristics of individuality and orientation to groups, factor measures (Buss, 1980) comprising the self-monitoring construct (Snyder, 1974) were utilized. These measures of social and external environment cues explained the greatest amount of variance of the effective LGD performance measures as scored by trained raters. Subjects' orientation to groups and their reports of individuality also were found to be significant predictors of effective LGD performance. Descriptions of individuals showing the most potential in a leaderless group discussion problem-solving situation are included.