Psychological homeostasis and internal balance

In 1929, Walter Cannon introduced the concept of homeostasis to describe the organism's ability to maintain internal stability. This principle also extends to the mind, which tends to maintain coherence between thoughts, emotions, and behaviors.

When this coherence is lacking, an internal tension arises that opens the way to cognitive dissonance.

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The theory of cognitive dissonance

Leon Festinger (1957) defined cognitive dissonance as the state of discomfort that emerges when inconsistent ideas, beliefs or behaviors coexist.

Distress increases when the conflict concerns important aspects of the individual's life.

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Induced complacency experiment

In 1959, Festinger conducted an experiment with students who were asked to perform a repetitive task and then lie about its pleasantness.

The results showed that those who received a low reward tended to modify their perception of the task to reduce internal discomfort.

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Self-justification and reduction of distress

Cognitive dissonance works as a mental self-regulation system. To reduce discomfort, we can:

• change behavior
• change beliefs

Both processes aim to re-establish internal coherence.

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The fox and the grapes: a psychological metaphor

The fable of the fox and the grapes represents the mechanism of dissonance reduction: what cannot be achieved is mentally devalued.

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Evolution of the theory

Subsequent studies have expanded the original model, highlighting the role of personal responsibility, identity, and developmental processes.

Dissonance is now also considered a functional signal to guide behavior.

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Conclusions

Cognitive dissonance is a universal mechanism: it can protect us from discomfort, but it can also lead us to self-deception if we are unaware of it.

Recognizing it helps you make more consistent decisions and reduce cognitive biases.

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