What is the core principle behind the influence strategy of 'reciprocity'?

The core principle behind the influence strategy of 'reciprocity' is that people tend to feel obligated to return a favor or kindness that they have received from someone else. It operates on the social norm that we should treat others as they have treated us. This creates a sense of indebtedness, prompting individuals to reciprocate the initial act, even if it's not explicitly requested. Reciprocity can manifest in various forms, such as returning a gift, doing a favor, or complying with a request. For example, if a colleague helps you with a project, you are more likely to feel obligated to help them with their project in the future. Similarly, if a company provides free samples of its product, customers are more likely to feel inclined to purchase the product. The effectiveness of reciprocity stems from several psychological factors. First, it is rooted in a deep-seated social norm that promotes cooperation and mutual benefit. Second, it taps into our desire to maintain fairness and avoid feeling indebted to others. Third, it leverages our fear of being perceived as ungrateful or exploitative. However, it's important to note that reciprocity is most effective when the initial act is perceived as genuine and voluntary, rather than manipulative or self-serving. The aim should be to build goodwill and create a positive relationship, rather than simply trying to extract a favor in return. It is about building a foundation of mutually beneficial interactions.