Final answer:
Frequency/familiarity refers to the phenomenon where repeated exposure to a stimulus increases liking for it. A common example of this is developing a liking for a song after hearing it several times. The same goes for ads, TV shows, and faces.
Step-by-step explanation:
The frequency/familiarity concept is a universal psychological phenomenon whereby the frequency of exposure to a stimulus enhances people's feelings towards it. A typical example of this is in music listening. If we hear a song repeatedly, we tend to start liking it. This is frequency/familiarity in action. Our brains become familiar with the repeated sound and start to accept and even appreciate it. It's why popular radio stations often play the same songs over and over. This principle applies to more than just music. Ads, television shows, and even faces can become more appealing the more frequently and regularly they're encountered.
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