Reciprocity Vs Persuasion

Persuasion define as an act or process of presenting arguments to move, motivate, or change your audience. It is also an attempts to win "the heart and mind" of the target. Thus persuasion must induce attitude change, which entails affective (emotion-based) change. Persuasion are compose of 6 principle, namely: Reciprocity, Scarcity, Authority, Commitment and consistency, Consensus, Liking. I will discuss each one of them below.
Reciprocity is define as the mutual expectation for exchange of value or service. In social psychology, reciprocity is a social rule that says we should repay, in kind, what another person has provided us. That is, people give back the kind of treatment they have received from you. An example of this is when someone

The notion of scarcity is that there is never enough (of something) to satisfy all conceivable human wants, even at advanced states of human technology. Scarcity involves making a sacrifice—giving something up, or making a tradeoff—in order to obtain more of the scarce resource that is wanted. For example, although air is more important to us than gold, it is less scarce simply because the production cost of air is zero. Gold on the other hand has a high production cost. It has to be found and processed, both of which require a great deal of resources.
Authority is the legitimate or socially approved use of power. It is the legitimate power which one person or a group holds over another. In business, Authority is shown when you have an expertise in something. As for example when you go the Computer store to buy a laptop. You approached one of the Sales Person and asked for the latest laptop. In this scenario, the person having an authority is the sales person because he has the product knowledge about the computer or

We tend to be attracted to people who communicate to us that they like us, and who make us feel good about ourselves. Physical attractiveness has long been known to be persuasive, but similarity is also quite effective. We are drawn to people who are like us, or who we perceive ourselves to be, and often make those judgments based on external characteristics like dress, age, sex, race, ethnicity, and perceptions of socioeconomic status. The principle of liking involves the perception of safety and belonging in communication.
I’ve been doing persuasion in my company when I talking to our customer to introduce the new product to convince to try and buy it. I explain to our customer the benefits and the advantage of the new product. I also explain the specifications of the product and compare it to the other product in the line. I told the customer that since the product is newly launched, the warranty for that product was extended to 2 years warranty instead of the regular 1 year warranty. In my personal experience, I used the principle of Authority to persuade our customer to buy the product because I have the knowledge of the