In 1971, Berger became an assistant professor of communication at Northwestern University. During this time, Calabrese studied under Berger, receiving his Ph.D. in 1973. In 1975, Berger and Calabrese published “Some explorations in initial interaction and beyond: Toward a developmental theory of interpersonal communication,” which serves as the foundation of URT. This article inspired a wave of new research examining the role of uncertainty in communication. Berger and Calabrese (1975) formed URT, also known as initial interaction theory, to explain the role of communication in reducing uncertainty in initial interactions and the development of interpersonal relationships.
The theory was developed, like other interpersonal theories before it (Heider, 1958), with the goal of allowing the communicator the ability to predict and explain initial interactions. Though Berger and Calabrese did not explore the realm of subsequent interaction, they did strongly recommend that future research should investigate the application of the framework of URT to developed relationships. Especially in initial encounters, there exists a high degree of uncertainty given that a number of possible alternatives exist in the situation (Shannon & Weaver, 1949). But individuals can use communication to reduce this uncertainty. Berger and Calabrese (1975) maintained that “communication behavior is one vehicle through which such predictions and explanations are themselves formulated” (p.101). Individuals have the ability to decrease uncertainty by establishing predictable patterns of interaction. Because of this, reducing uncertainty can help foster the development of relationships.
Berger and Calabrese (1975) found that uncertainty was related to seven other communication and relational-focused concepts: verbal output, nonverbal warmth, information seeking, self-disclosure, reciprocity, similarity, and liking. From those concepts, the researchers introduced a collection of axioms, or propositions, supported by past uncertainty research. Each axiom states a relationship between a communication concept and uncertainty. From this basis of axioms, the theorists were able to use deductive logic to infer twenty-one theorems that comprise the theory of uncertainty reduction (West & Turner, 2000). The procedure used to develop the axioms and theorems was adopted from Blalock (1969). A complete list of the axioms and theorems of URT is available in Appendix A: Axioms and Theorems of Uncertainty Reduction Theory.
Central to URT is the supposition that in initial interactions, an individual’s primary concern is to decrease uncertainty and increase predictability regarding the behaviors of the self and the communicative partner. This idea is based on Heider's (1958) notion that individuals seek to make sense out of the events he perceives (Berger & Calabrese, 1975). Individuals must be able to engage in proactive and retroactive strategies to learn how to predict what will happen and also explain what has already happened.
Heath and Bryant (2000) stated: Uncertainty-reduction theory is a powerful explanation for communication because it operates in all contexts to help explain why people communicate
as they do
(p. 271). The impact of Berger and Calabrese (1975) on the field of interpersonal communication was and continues to be prolific. In the past thirty years, this article has
generated a plethora of research, changing the way that relationships are explored and analyzed.
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