In the most recent study, the alphas were .86 for the total BEQ, and .70, .70, and .80 for the three subscales Negative Expressivity, Positive Expressivity, and Impulse Strength, respectively. Exploratory factor analysis revealed that the 16 items in the BEQ were all positively intercorrelated, with a mean interitem correlation of .27. To test whether the BEQ items would again form a General Expressivity factor with three facets, we subjected the interitem correlation matrix to a principal-components analysis. The first unrotated factor accounted for 33% of the total variance, and all 16 items loaded positively, with a mean loading of .57. The two items with the highest loadings (.75 and .73, respectively) were "I am an emotionally expressive person," and "What I'm feeling is written all over my face."
For full psychometric description, see Gross, J.J., & John, O.P. (1997). Revealing feelings: Facets of emotional expressivity in self-reports, peer ratings, and behavior. Journal of Personality and Social Psychology, 72, 435-448.