A sample of 310 Ss composed of 90 normals, 150 anxiety reactions, and 70 schizophrenics was used in a cluster analysis of Barren's 68-item Es scale. The 5 oblique clusters which emerged were: (a) emotional well-being, (b) cognitive well-being, (c) physical well-being, (d) religious attitude of nonbelief and nonparticipation, and (e) seeking heterosexual stimulation and escape from boredom. In a hierarchical analysis, it was found that the first 3 clusters could be combined in a single condensed cluster called sense of wellbeing. Consistent significant mean differences were found between the normal and abnormal groups in both the original sample as well as in a replicated sample of 100 psychiatric and 100 normal Ss for the well-being clusters but not for the religious and heterosexual clusters. The results are discussed both in terms of their empirical and conceptual relevance to the ego-strength construct.