Final answer:
Reciprocity in social psychology explains how people tend to react positively to expressions of liking and affection.
Explanation:
The principle that states people tend to react positively to flattery, compliments, and expressions of liking and affection aligns with the concept of reciprocity in social psychology. Reciprocity suggests that individuals tend to respond in kind to the actions or emotions of others, creating a mutual exchange. This principle is reflected in how relationships develop based on mutual liking and positive interactions.
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