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The principle of reciprocity refers to the human tendency to want to give something back when something is received. For example, if a friend invites you to their party, you're more inclined to invite them to your own event.

This strategy relies on people's desire to appear consistent. Once someone commits to something, they're more likely to go through with it. For example, if a person signs a petition, they may be more likely to support that cause financially in the future.

Social proof is the idea that people will conform to the actions of others under the assumption that those actions are reflective of the correct behavior. For instance, seeing a long line outside a restaurant can persuade others that the restaurant is of high quality.

Invoking authority means using credible and knowledgeable sources to persuade others. For example, a dentist endorsing a particular brand of toothpaste is likely to persuade people to buy it because of the perceived expertise.

We are more likely to be persuaded by people whom we like. This can be because of similar interests, physical attractiveness, or other factors. An example is a salesperson mirroring a client's body language to increase likeability and persuade the client to buy.

Scarcity implies that something is limited or hard to obtain, which can make it seem more valuable. For example, 'limited-time offers' persuade individuals to act quickly for fear of missing out.

The principle of unity involves creating a bond by sharing a common identity. For example, veterans supporting a military-related cause may persuade other veterans or current military personnel due to shared experiences.

The contrast principle states that our perception is altered when we compare two things that are different. A common example is a salesperson showing a higher-priced item before the one they actually want to sell to make the second item seem more affordable.

Storytelling conveys messages in a narrative format to engage emotional responses and persuade. For instance, charities often share individual stories of those they help to create an emotional connection and encourage donations.

Priming involves subtly influencing how people interpret and respond to information by exposing them to prior stimuli. For example, a store playing French music might prime customers to purchase French wine.

This effect occurs when higher expectations lead to an increase in performance. For example, a teacher who expects certain students to do well may unknowingly behave in ways that foster that success.