Social proof is a psychological principle that describes people's tendency to follow a crowd. If you see a bunch of people doing, or liking something - then it must be worth doing, or worthy of liking. As social beings, we take our friends and colleagues actions as proof that an activity, or business is something that we should be doing too.
As a business owner or manager, you can use Social Proof to your advantage. Essentially, you get more people to like you (and buy from you) because your potential customers think that everyone else is buying from you.
Read more from Dave Lavinsky, in his article, How Increased Teen Drug Use Can Help Your Business.
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