Key points are not available for this paper at this time.
Timothy J. Owens, Accentuate the Positive-and the Negative: Rethinking the Use of Self-Esteem, Self-Deprecation, and Self-Confidence, Social Psychology Quarterly, Vol. 56, No. 4 (Dec., 1993), pp. 288-299
Timothy J. Owens (1993) studied this question.