When you take a free sample at the grocery store without buying something, do you feel a twinge of guilt? The Reciprocity Principle explains how getting something for “free” creates future obligations. We feel like we have to buy some cheese if we took a free cube because of the reciprocity principle of persuasion. Learn about Cialdini’s Reciprocity Principle definition and understand how the principle of reciprocity came about.
The Reciprocity Principle: Why Free Samples Are a Trap










