Understanding Cognitive Dissonance

• newEditor
• Psychology
• IB curriculum
• Secondary Education
• Tertiary Education
• Age 12

Understanding Cognitive Dissonance

What do you already know about cognitive dissonance?

Learning Objective

At the end of the lesson, you will be able to explain the theory of cognitive dissonance, describe its effects on behaviour, and apply the concept to real-life examples.

What is Cognitive Dissonance?

Cognitive dissonance is the mental discomfort we feel when our beliefs or actions are inconsistent. The theory was developed by psychologist Leon Festinger in 1957.

How Dissonance Arises

Dissonance occurs when we hold two conflicting thoughts, or when our behaviour does not match our beliefs. This can happen in daily decisions and major life choices.

Coping with Dissonance

Changing Beliefs

Adjust our beliefs to better align with actions or new information.

Changing Behaviour

Take action to align behaviour with beliefs or values, reducing discomfort.

Example: Environmental Choices

A student values protecting the environment but forgets to recycle. They might feel dissonance and justify it, change their view, or improve their recycling habits.

Real-Life Applications

Cognitive dissonance explains behaviour in marketing, decision-making, health, and even politics. It helps us understand why people sometimes stick to beliefs despite evidence.

Reflection: Have You Experienced It?

Recall a time when your actions didn’t match your beliefs. What did you do to resolve the discomfort? Share with a partner or make notes.

Write down 3 things you learned in this lesson.

Write down 2 things you want to know more about.

Ask 1 question about something you haven't quite understood yet.