The Benjamin Franklin effect is a cognitive bias that causes people to like someone more after they do that person a favor, especially if they previously disliked that person or felt neutral toward them. For example, the Ben Franklin effect could cause someone who disliked you to start liking you after they do you a small favor, such as loaning you a book or helping you with an assignment.

The Ben Franklin effect is a useful concept to be aware of, since you can use it when interacting with others, and since you should be aware of the fact that others might use it on you. As such, in the following article you will learn more about the Ben Franklin effect, and see how you can use it yourself as well as how you can account for its use by others.

Examples of the Benjamin Fraklin effect

The best example of the Benjamin Franklin effect comes from the story that gave it its name, which appears in the autobiography of Benjamin Franklin, a renowned scientist and politician.

In the story, Franklin describes how he dealt with the animosity of a rival legislator. Specifically, after hearing that his rival has a rare book in his library, Franklin wrote to his rival and asked whether he could borrow the book for a few days. The rival agreed, and a week later Franklin returned the book, with a letter expressing how much he liked it. The next time the two met, Franklin’s rival spoke to him with great civility and showed a willingness to help him in other matters, leading the two men to become good friends. Franklin consequently referred to this effect as an old axiom, stating that:

“He that has once done you a kindness will be more ready to do you another, than he whom you yourself have obliged.” — From “The Autobiography of Benjamin Franklin“

A modern example of the Ben Franklin effect appears in a study where participants were tasked with solving a series of puzzles next to someone who they thought was also a participant in the experiment, but who was in fact working for the researchers. This partner asked some of the participants for help in solving a puzzle, and those who were asked for help, which they all agreed to provide, later displayed the Ben Franklin effect, by expressing more positive feelings toward their partner than participants who were not asked for help.

Similarly, an additional example of the Benjamin Franklin effect appears in a study where participants took part in a cognitive task that allowed them to earn some money. After completing the task, the person running the experiment, who had a slightly unlikable demeanor, asked some of the participants if they could do him a personal favor, and return the money that they earned, which most of them agreed to do. Participants who were asked for that favor later displayed the Ben Franklin effect, when they rated the experimenter more positively than did those who were not asked for that favor.

Why people experience the Benjamin Franklin effect

The Benjamin Franklin effect is generally explained using cognitive dissonance theory, which suggests that holding two or more contradictory beliefs at the same time causes people to experience mental discomfort. Specifically, based on this framework, people experience the Ben Franklin effect because they try to reduce their cognitive dissonance, which in this context could occur if they performed a favor for someone that they don’t sufficiently like, as a result of the mismatch between their actions and their feelings toward the person that they’re helping.

Essentially, this means is that when someone does you a favor, they need to be able to justify it to themself, in order to avoid the cognitive dissonance that would occur from doing something positive for someone that they don’t sufficiently like. The simplest way to do this is generally to convince themself that they must like you enough to do you that favor, even if that wasn’t originally the case.

As one study on the topic states:

“As long as a person likes the recipient of the favor, feels that he is deserving, or that he would probably return the favor, the person is able to offer himself ample justification for having performed the favor. There are instances, however, when an individual is ‘put on the spot’ and winds up performing a favor for someone he does not hold in high esteem, a complete stranger, or even someone he actively dislikes. In such instances, he has insufficient justification for performing the favor since he does not particularly like the person and has no reason to expect that the person would reciprocate the favor. Accordingly, if an individual performs a favor for a person about whom he initially has neutral or negative feelings, he may come to like that person as a means of justifying his having performed the favor. This prediction is derived from the theory of cognitive dissonance… If one does a favor for a disliked person, the knowledge of that act is dissonant with the cognition that one does not like the recipient of the favor. That is, since one does not usually benefit persons whom one dislikes, the situation is dissonance arousing. One way in which a person might reduce this dissonance is to increase his liking for the recipient of his favor, i.e., come to feel that he was deserving of the favor.” — From “Liking a Person as a Function of Doing Him a Favour”, by Jecker & Landy (1969)

In addition, another notable psychological theory that can be used to explain some cases of the Ben Franklin effect to some degree, is the self-perception theory. This theory suggests when people have no concrete, preexisting attitude toward someone or something, they tend to observe their own behavior, and then use their observations of their behavior to conclude what their attitude must be.

In the context of the Ben Franklin effect, this means that when people perform a favor for someone that they have no meaningful preexisting relationship with, the concept of self-perception could lead them to observe their positive actions toward that person, and conclude that they must have positive feelings toward them.

Finally, in some cases, other factors beyond cognitive dissonance and self-perception can also play a role when it comes to the Ben Franklin effect. For example, in certain situations being asked for a favor can make someone feel acknowledged and respected, which can cause them to develop more positive feelings toward the person who asked them for help.

Overall, we experience the Ben Franklin effect primarily because when we do someone a favor, our mind tries to justify this behavior to itself by deciding that we must like that person, in order to avoid a state of cognitive dissonance. In addition, other factors can also prompt the Ben Franklin effect, such as the fact that when we don’t have a strong preexisting attitude toward someone, we often shape our attitude by observing our own behavior toward them.

Variability in the Benjamin Franklin effect

It’s important to note that there is significant variability with regard to psychological phenomena such as the Benjamin Franklin effect, and as such, this effect isn’t always expected to play a role in people’s thinking.

There are various reasons why this effect might be absent. For example, it could be that the person doing the favor simply doesn’t care about it much, or that they are able to justify it in some other way besides increasing their liking for the person that they are helping, such as by telling themself that they might derive some benefit from this favor in the future.

In addition, there is also expected variability with regard to other aspects of the Ben Franklin effect, such as the degree to which it will influence people’s feelings, and the amount of time that this influence will last.

Factors influencing the Benjamin Franklin effect

Some factors can influence the likelihood that someone will experience the Benjamin Franklin effect, as well as the degree to which they will experience it.

As noted above, since the Ben Franklin effect is driven primarily by the desire to reduce cognitive dissonance, the greater the dissonance, the more likely a person is to experience the Benjamin Franklin effect. Accordingly, in general, the greater the gap between the act of performing the favor and the way a person feels toward the person that they’re helping, the more likely that person is to experience the Benjamin Franklin effect.

This means that people are more likely to experience this effect when they have negative or neutral feelings toward the person that they’re helping. However, it’s also possible for people to experience this effect in cases where they perform a favor for someone that they have moderately positive feelings toward, as long as the cost of the favor in question, in terms of factors such as the effort, risk, or resources involved, outweighs the degree to which the person performing the favor likes the person that they’re helping.

Furthermore, other factors that can also affect the likelihood that someone will experience the Benjamin Franklin effect. For example, since this effect can be prompted by self-perception in situations where a person has no concrete attitude toward the person asking for the favor, this means that a lack of preexisting attitude toward the person asking for the favor can increase the likelihood that the person who is doing the favor will experience this effect.

How to use the Benjamin Franklin effect

The basic way to use the Benjamin Franklin effect is to ask people for a favor, in situations where you believe that doing so will cause them to like you more. This includes, in particular, situations where they either dislike you, feel neutral toward you, or have no preexisting attitude toward you, though the Ben Franklin effect can sometimes also work if the person you ask for a favor does like you a little.

Below are a few tips, which are based on research on the topic, and which will help you maximize your ability to utilize this effect:

The scope of the favor generally doesn’t matter as much as the favor itself. In many cases, the increase in rapport comes from the fact that the other person does you a favor, even if the favor is relatively minor. This is especially true if the other person dislikes you, rather than simply feels neutral or slightly positive toward you.

In many cases, the increase in rapport comes from the fact that the other person does you a favor, even if the favor is relatively minor. This is especially true if the other person dislikes you, rather than simply feels neutral or slightly positive toward you. Don’t be afraid to ask for help, since people often underestimate how likely others are to help them. We tend to underestimate the likelihood that others will help us because, when we seek help, we focus on the expected cost of helping us, while our potential helpers focus on the expected social cost of refusing a direct request for help (i.e. of saying “no”), which most people want to avoid whenever possible.

We tend to underestimate the likelihood that others will help us because, when we seek help, we focus on the expected cost of helping us, while our potential helpers focus on the expected social cost of refusing a direct request for help (i.e. of saying “no”), which most people want to avoid whenever possible. Remember that even if your intentions feel obvious to you, they generally aren’t as obvious to the other person. We tend to overestimate the likelihood that the other person will realize that we’re asking for a favor in an attempt to build rapport, due to cognitive biases such as the illusion of transparency and the curse of knowledge. Keeping this in mind will help you be more willing to ask for favors, and more comfortable when you do so.

We tend to overestimate the likelihood that the other person will realize that we’re asking for a favor in an attempt to build rapport, due to cognitive biases such as the illusion of transparency and the curse of knowledge. Keeping this in mind will help you be more willing to ask for favors, and more comfortable when you do so. You can take advantage of the effects of reciprocity, by performing a small favor for the other person, before asking them to perform a favor for you. Essentially, by performing a favor for the other person first, you make it less likely that they will refuse to help you later, even if they did not ask you for a favor in the first place. However, if you do this, make sure to perform the initial favor only a short amount of time before asking for a favor yourself, because the effects of reciprocity tend to diminish over time.

Essentially, by performing a favor for the other person first, you make it less likely that they will refuse to help you later, even if they did not ask you for a favor in the first place. However, if you do this, make sure to perform the initial favor only a short amount of time before asking for a favor yourself, because the effects of reciprocity tend to diminish over time. After asking the other person for a favor, you can perform a small favor in return, in order to increase the likelihood of them helping you if you ask for a favor again. Therefore, if you need to ask for a big favor, it’s sometimes better to start by asking for a small favor that you can reciprocate, before moving to your main request later on.

Most importantly, make sure to use common sense when taking advantage of this effect. This means that you should be realistic with regard to who you ask for favors, and with regard to the favors that you ask for. For example, if you ask someone that you barely know for a huge favor, it’s likely that they’ll simply refuse, and might even end up forming a negative opinion of you.

Finally, don’t forget that how you ask for a favor is also important. This holds both when it comes to getting the other person to perform the favor for you, and when it comes to influencing how they view you in general. The best way to ask for a favor will vary in different situations, but in general, you will get better results by being kind and polite, especially if your goal is to use the Ben Franklin effect in order to build rapport.

How to account for the use of the Benjamin Franklin effect by others

Some people might try to use techniques that are based on the Benjamin Franklin effect on you, whether they’re explicitly aware of this effect or whether they’re just generally aware that such techniques can work.

In some cases, the use of such techniques is driven by a harmless desire to build rapport, that you likely won’t mind. However, there are situations where this attempted manipulation is driven by more negative intentions. This can be the case, for example, if a salesperson asks you to do them a small favor in order to get you to like them more, so it will be easier to persuade you to accept a bad offer later on. Furthermore, in some cases you might dislike the fact that this effect is being used on you, simply due to its manipulative nature.

In such situations, you will likely want to negate the potential influence of this cognitive bias, to the best of your ability.

The first step to achieving this is to simply be aware of the Ben Franklin effect, and to recognize situations where others attempt to use it in order to influence your thinking. Then, there are several things you can do:

First, you can simply refuse to perform the favor, which can shut down the attempted manipulation from the start. However, while this is an effective approach, it’s not always a viable option. For example, this might not be an optimal course of action if a colleague asks you to do them a favor in the workplace, if you know that saying “no” will reflect very badly on you.

which can shut down the attempted manipulation from the start. However, while this is an effective approach, it’s not always a viable option. For example, this might not be an optimal course of action if a colleague asks you to do them a favor in the workplace, if you know that saying “no” will reflect very badly on you. If you do decide to perform the favor, you can use general debiasing techniques, such as slowing down your reasoning process, in order to help you process the situation in a more rational manner, that will make you less vulnerable to this cognitive bias.

such as slowing down your reasoning process, in order to help you process the situation in a more rational manner, that will make you less vulnerable to this cognitive bias. In addition, you can use debiasing techniques that are tailored to this particular cognitive bias. Most notably, you can actively explain to yourself why you’re performing the favor in question, in a way that helps you avoid cognitive dissonance, without increasing the degree to which you like the person who’s asking you to perform the favor. For example, you can tell yourself “I’m going to help them because it will make me look good at work, and not because I like this person”.

The negative Benjamin Franklin effect

As we saw above, the Benjamin Franklin effect occurs primarily for two main reasons:

First, people try to reduce any cognitive dissonance that they might experience, so they justify doing a favor to someone by telling themself that they must like that person, if they don’t already.

Second, in situations where people don’t have a strong preexisting attitude toward someone, they sometimes shape their attitude by observing their behavior toward that person.

Accordingly, there is also a negative version of the Ben Franklin effect, which can cause people to increase the degree to which they dislike a person, after they treat that person in a negative manner. This can be both because they feel that they need to justify that mistreatment to themself, and because they might base their attitude toward that person on their own negative actions.

Summary and conclusions