A determiner of the centrality of a trait in impression formation.

"The hypothesis that the centrality of a trait varies with the strength of that trait in the perceiver receives qualified support with respect to the trait pair sociable-unsociable… . The results… in indicating that one's own sociability may influence the centrality of that trait in the forming of impressions of others, enhance the possibility that 'person perception' may involve other relationships between the traits of the perceiver and those of the perceived regarding the saliency and weight of those traits in the resulting impressions." (PsycINFO Database Record (c) 2010 APA, all rights reserved)