The tendency to develop a more positive attitude toward a stimulus after repeated instances of brief encounters with it is called the effect.

ANSWER: MERE-EXPOSURE EFFECT.

EXPLANATION:

The MERE-EXPOSURE EFFECT is a phenomenon in psychology, in which people or individuals tend to develop a preference or likeness for a particular thing or things merely because of their exposure to that stimulus, which increases their liking for it. However, this effect is sometimes referred to as the FAMILIARITY PRINCIPLE in social psychology.

This effect was immensely described by Robert Zajonc ( a Polish-born American social psychologist), known for his work on social and cognitive processes for many decades.

Zajonc established that the mere-exposure effect is capable of taking place without conscious cognition.

Elements like words, geometric figures, Chinese characters, paintings, pictures of faces, and sounds, have been used to describe this effect by psychologists.

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