I looked into Dr. Charlton's suggestion in the comments of the last post that self-esteem might boost self-assessment of conscientiousness. Using MIDUS data, I estimated an OLS model with conscientiousness as the dependent variable and self-esteem as a predictor. I also added a Mormon-versus-others dummy variable as a predictor in order to see if greater conscientiousness might emerge for Mormons once the influence of self-esteem is controlled.
OLS Standardized Regression Coefficients
Self-esteem is strongly related to higher conscientiousness scores. Personality researchers may do well to examine if self-assessments are distorted by the level of self-esteem. On the other hand, the result for Mormons remains unchanged: they do not differ from others in conscientiousness even when the influence of self-esteem is controlled.