ident in the interpersonal communication literature. Spitzberg and Dillard (chap. 6) directly assess the molecular behaviors that are associated with perceptions of communication competence. The large effect size observed between talk time and perception of skill level in naturalistic settings underscores the importance of communicator characteristics. This perception may be reverberating across meta-analyses, as powerless speakers (see Ttmmerman, chap. 5) and low-self-esteem communicators (see Sahlstein & Allen, chap. 4) may talk less than their powerful and high-self-esteem counterparts. These issues are ripe for future primary investigations.
Each of the areas discussed in this preview is more interrelated than distinctive. Meta-analysis is a valuable tool because it can summarize issues that cut across domains of literature and unify disparate findings. Each of the constructs in this unit deals with individual-level processes in interpersonal communication. From the vantage of perceptions, self-esteem or self-presentation, affiliation, and communicator skills, the meta-analyses summarize enduring issues, offer surprising insights, and pose new questions for future investigations. The ability to summarize findings and point to new avenues of research is an important benefit of meta-analysis. It offers interpersonal communication researchers an additional tool for theory development.