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Increased interest in emotional expressivity has led to a proliferation of conceptions and measures. It is unclear, however, whether they all refer to the same construct and whether the domain of emotional expressivity is best conceptualized as unidimensional or multifaceted. Study 1 examined 6 common expressivity questionnaires, yielding 5 factors: Expressive Confidence, Positive Expressivity, Negative Expressivity, Impulse Intensity, and Masking. To develop a nomological network for these factors, the factors were related to broader personality taxonomies and their differential relations to sex and ethnicity were tested. Study 2 provided further evidence of discriminant validity in relation to (a) typical emotion expression in peer relationships, (b) ability to pose emotions in the laboratory, (c) likability, and (d) regulation of emotion and mood. These findings support a hierarchical model of individual differences in emotional expressivity.
Gross et al. (Thu,) studied this question.