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Leon Festinger in 1957 defined the discomfort of holding inconsistent beliefs and behaviours as:

ANormative influence
BCognitive dissonance
CSocial loafing
DGroup polarization
Answer & Solution
Correct answer: B. Cognitive dissonance
1. A smoker who believes smoking harms health feels it. 2. This is cognitive dissonance. 3. People change behaviour or belief to reduce it. _Source: OpenStax Psychology 2e, Chapter 12, Social Psychology (CC BY 4.0)._
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