When Familiarity Becomes Truth: The Simple Contact Effect and the Judgment Trap, 1968-2025

When Familiarity Becomes Truth: The Simple Contact Effect and the Judgment Trap, 1968-2025

The simple contact effect is a psychological phenomenon in which repeated exposure to a person or thing is perceived as favorable and correct, regardless of the validity of its content. The fact that we are familiar with something is itself a reassurance. It is characterized by the fact that familiarity itself generates a sense of security, which is then replaced by a basis for evaluation.

This phenomenon is closely related to System 1, the intuitive thinking proposed by Daniel Kahneman. System 1 works fast and automatically, tends to process familiar information easily, and tends to judge it as good or correct. As a result, conclusions are reached before examining the reasons, and systematic bias is likely to occur.

Kahneman pointed out that while such intuition is useful in many situations, there is always the danger of omitting verification. The simple contact effect is a prime example of this, and it is also the reason why opinions that are presented repeatedly seem to be true. However, excessive repetition can lead to boredom and antipathy, so it does not always work in the same direction.

This is why it is important to call up System 2 through discomfort and time to stop and think, and to be willing to separate familiarity from judgment.