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IB DP Psychology — Sociocultural Approach | SL & HL | Paper 1
🎯 Learning Intentions By the end of this note, you will be able to:
- Define cognitive dissonance, consonance, and dissonance reduction using IB-aligned terminology.
- Explain how cognitive dissonance arises from conflicting cognitions and the psychological discomfort it produces.
- Describe the three main strategies people use to reduce cognitive dissonance and the conditions that influence which strategy is chosen.
- Evaluate research evidence for cognitive dissonance theory using supporting and opposing studies in ACAS format.
- Apply cognitive dissonance theory to a real-world case study from the sociocultural perspective.
- Discuss the extent to which cognitive dissonance theory provides a complete explanation of attitude change and behaviour.
- Analyse cognitive dissonance research using relevant concept areas: Bias, Causality, Perspective, and Responsibility.
Introduction & Context
Imagine you have always considered yourself a healthy, disciplined person — someone who exercises regularly and makes careful food choices. Then, one evening, you find yourself finishing an entire bag of crisps while watching television, knowing full well that it contradicts everything you believe about yourself. In that moment, something uncomfortable stirs inside you. You might find yourself thinking, "Well, I worked out this morning, so it balances out," or "I've been stressed lately — I deserved a treat." Notice what is happening: you are not simply accepting the contradiction. You are actively working to resolve it.
This internal discomfort — the tension between what we believe and what we do — is one of the most powerful forces shaping human thought and behaviour. Psychologists have long observed that people are remarkably motivated to maintain consistency between their beliefs, attitudes, and actions. When that consistency is threatened, something must give. Understanding why people change their minds, justify their choices, and sometimes hold onto beliefs in the face of contradictory evidence all begins with understanding this phenomenon.
🔧 Analogy — The Squeaky Wheel Think of your mind as a well-oiled machine that runs smoothly when all its parts are in harmony. Cognitive dissonance is like a squeaky wheel — it creates friction and noise that the machine cannot ignore. The machine does not simply tolerate the squeak; it finds a way to fix it. Sometimes it oils the wheel (changes behaviour), sometimes it replaces the wheel entirely (changes the belief), and sometimes it convinces itself the noise is not really that bad (rationalises). The key insight is that the machine is always motivated to restore smooth, frictionless operation.
Core Concepts
In 1957, social psychologist Leon Festinger proposed a formal framework to explain the discomfort we feel when our thoughts, beliefs, or behaviours conflict with one another. He noticed that people do not simply hold contradictory ideas side by side — they are driven to resolve the conflict. His theory gave a name to both the uncomfortable state and the process of resolving it.
📖 Key Definition — Cognitive Dissonance Cognitive dissonance is the psychological discomfort or tension