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Uncertainty reduction theory

🧠 Psychology By CampusDown Wiki Editorial Team Last updated
Uncertainty reduction theory explains how strangers communicate to gain information that helps them predict and explain each other’s behavior. Charles Berger and Richard Calabrese set it out in 1975 as a set of seven axioms about initial interaction.
Contents
  1. 1. What is uncertainty reduction theory?
  2. 2. The seven axioms
  3. 3. How do people gather information?
  4. 4. Extensions and criticisms
  5. 5. Frequently asked questions
  6. 6. References

What is uncertainty reduction theory?

Uncertainty reduction theory holds that when strangers meet, they communicate to gather information that lets them predict and explain each other’s behavior, gradually reducing uncertainty. Communication scholars Charles Berger and Richard Calabrese introduced it in a 1975 article in the first volume of Human Communication Research.

📌 At a glance
Meaning
People reduce uncertainty about others through communication in early encounters
Proposed by
Berger & Calabrese (1975)
Form
Seven axioms and theorems derived from them
Key variables
Amount of talk, nonverbal warmth, information seeking, self-disclosure, reciprocity, similarity, liking

The seven axioms

Berger and Calabrese stated the theory in the form of axioms, much like a mathematical system. In plain terms:

VariableRelationship to uncertainty
Verbal communicationMore talk reduces uncertainty
Nonverbal warmthMore smiles, eye contact and warmth reduce uncertainty
Information seekingHigh uncertainty increases question asking
Intimacy of self-disclosureHigh uncertainty lowers intimacy of disclosure
ReciprocityHigh uncertainty increases reciprocity
SimilaritySimilarity reduces uncertainty
LikingReduced uncertainty increases liking

How do people gather information?

Why do so many first conversations start with "Where are you from?" Berger and Calabrese proposed that initial interactions usually begin with an exchange of demographic information such as age, hometown or major, and move toward more personal attitudes and opinions over time. As people become more predictable to each other, conversation becomes more comfortable and the relationship can progress.

Berger later described three kinds of information-seeking strategies: passive (observing the other person), active (asking third parties) and interactive (asking the person directly).

Extensions and criticisms

  • William Gudykunst extended the ideas to intercultural encounters in anxiety/uncertainty management (AUM) theory, often used to explain the disorientation of studying or living abroad.
  • Critics note that people do not always seek to reduce uncertainty; they are more motivated when they expect to meet again or when the other person can offer rewards.
  • Social penetration theory describes how relationships deepen through self-disclosure after the first meeting, and the Johari window maps what we and others know about ourselves.

Frequently asked questions

What is uncertainty reduction theory?
It is a theory, proposed by Berger and Calabrese in 1975, that strangers use communication to gather information and reduce uncertainty about each other.
How many axioms are there?
The original article presented seven axioms involving talk, nonverbal warmth, information seeking, self-disclosure, reciprocity, similarity and liking.
What are the information-seeking strategies?
Passive (observing), active (asking others) and interactive (talking with the person directly).

References

  1. Berger, C. R., & Calabrese, R. J. (1975). Some explorations in initial interaction and beyond: Toward a developmental theory of interpersonal communication. Human Communication Research, 1(2), 99–112.

Reports and materials that use this theory (Korean)

There are no materials dedicated to this theory yet, but you can search related reports in the CampusDown library (Korean).

Find more reports · Search '불확실성 감소이론' on CampusDown →
Social penetration theoryWhat is social penetration theory? Irwin Altman and Dalmas Taylor’s 1973 onion model, the breadth and depth of self-disclosure, stages of relationship development, reciprocity, rewards and costs, depenetration, and links to the Johari window and online self-disclosure.🧠 PsychologyJohari WindowLearn the Johari window model: the open, blind, hidden and unknown areas, how self-disclosure and feedback change them, a step-by-step adjective exercise for teams and classrooms, and tips for using it in coaching and job interviews.🧠 PsychologyActive listeningWhat is active listening? Carl Rogers and Richard Farson’s 1957 concept, Rogers’s core conditions of empathy, unconditional positive regard and congruence, key techniques such as paraphrasing, reflecting feelings and summarizing, Thomas Gordon’s P.E.T. and I-messages, and everyday examples.🧠 PsychologyWatzlawick’s Axioms of CommunicationA plain-English guide to Paul Watzlawick’s five axioms of communication: you cannot not communicate, content and relationship, punctuation, digital and analog, and symmetrical or complementary interaction, with everyday examples and family therapy uses.👪 Family & Child StudiesRelational dialectics theoryWhat is relational dialectics theory? Baxter and Montgomery’s 1996 framework, the tensions of autonomy and connection, openness and closedness, predictability and novelty, internal and external tensions, coping strategies, and examples.🧠 Psychology

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This article was last updated on October 23, 2026. It is based on widely recognized original works and textbooks; when citing it in a paper, please check the original sources listed in the references.