Mere exposure effect
Also known as: Familiarity principle
We come to like things simply because we have encountered them before.
What it means
The mere exposure effect is the finding that repeated exposure to a stimulus increases liking for it, even in the absence of any reward, new information, or conscious recognition of having seen it before. The leading mechanism is perceptual fluency: each exposure makes the stimulus easier to process, and that fluency is experienced as a mild, pleasant feeling that the mind misattributes to the stimulus itself, reading 'easy to process' as 'good' or 'safe.' Zajonc's experiments showed the effect for novel stimuli such as nonsense words, foreign characters, and faces, and notably it can operate even with subliminal presentations the viewer cannot consciously report. Important boundary conditions exist: the effect is strongest for initially neutral or mildly positive stimuli and tends to follow an inverted-U, so excessive repetition can breed boredom or reactance, and disliked or threatening stimuli may not benefit. It matters as a foundation of advertising and branding (familiarity sells), of the comfort and stickiness of the status quo, and of subtle preference formation in everything from music to political candidates.
Examples
A song you initially found grating gradually grows on you, and may even become a favorite, after repeated airplay on the radio.
A new colleague you barely speak to becomes oddly likeable by month three, purely from sharing a lift and a kitchen — proximity doing the work that conversation never did.
Sponsors pay for pitchside hoardings nobody reads, because the point is not information: after ninety minutes the name simply feels familiar, and familiar quietly reads as trustworthy.
First described in Robert Zajonc (1968).
Where this comes up
- The Memory Market and Gut FeelingsWhy do some brands become unforgettable while others disappear from memory? Grounded in behavioral science, consumer ps…