Related Experiment Video
Updated: May 25, 2026

10:50
Using the FishSim Animation Toolchain to Investigate Fish Behavior: A Case Study on Mate-Choice Copying In Sailfin Mollies
Published on: November 8, 2018
Strong reciprocity is not uncommon in the "wild"
1Sociology, Trinity College, Cambridge CB2 1TQ, United Kingdom. wgr@wgrunciman.u-net.com
The Behavioral and Brain Sciences
|February 1, 2012
Summary
Experimental evidence for reciprocity may not fully represent real-world behavior. Strong reciprocity, seen in groups like the Mafia, might be more prevalent than previously thought.
Area of Science:
- Behavioral Economics
- Social Psychology
- Evolutionary Biology
Background:
- Experimental studies often examine weak or strong reciprocity.
- Extrapolating these findings to real-world behavior presents challenges.
- Guala highlights the difficulty in bridging experimental and naturalistic observations.
Purpose of the Study:
- To evaluate the applicability of experimental reciprocity findings to natural settings.
- To explore the extent of strong reciprocity in real-world communities.
- To challenge the limitations of extrapolating laboratory results.
Main Methods:
- Analysis of existing experimental evidence on reciprocity.
- Case study examination of real-world social structures.
- Comparative analysis of theoretical models and empirical observations.
Main Results:
- Experimental findings on reciprocity may not directly translate to diverse real-world contexts.
- Strong reciprocity appears to be more common in certain natural communities than experimental data suggest.
- The Mafia example illustrates significant strong reciprocity in a non-laboratory setting.
Conclusions:
- Caution is needed when generalizing experimental reciprocity data to the 'wild'.
- Real-world social dynamics may exhibit higher levels of strong reciprocity.
- Further research is needed to understand reciprocity across different social environments.
Related Concept Videos
Factors Influencing Attraction IV: Reciprocity
Reciprocity in attraction is fundamental to social and romantic relationships, shaping how individuals form and maintain connections. The psychological principle underlying this phenomenon is that people tend to like those who express liking toward them. Balance theory supports this tendency, suggesting that mutual attraction fosters psychological harmony, whereas one-sided affection leads to discomfort and cognitive dissonance.The Psychological Mechanisms Behind ReciprocityWhen individuals...
Nonconscious Mimicry
Nonconscious mimicry occurs when individuals alter their mannerisms to match the behaviors and expressions of those nearby, without intention.
Social Proof
Social proof is a form of persuasion based on comparison and conformity. People compare their behavior and actions to what others are doing and will change to conform to do what their peers do.
Relationship Formation
What do you think is the single most influential factor in determining with whom you become friends and whom you form romantic relationships? You might be surprised to learn that the answer is simple: the people with whom you have the most contact. This most important factor is proximity. You are more likely to be friends with people you have regular contact with. For example, there are decades of research that shows that you are more likely to become friends with people who live in your dorm,...
Altruism
Altruistic behaviors are “unselfish” behaviors—those that help another individual at the expense of the individual carrying out the behavior. Despite the negative consequences for the altruistic animal, these behaviors are thought to have evolved for several reasons.
Social Exchange Theory
We have discussed why we form relationships, what attracts us to others, and different types of love. But what determines whether we are satisfied with and stay in a relationship? One theory that provides an explanation is social exchange theory. According to social exchange theory, we act as naïve economists in keeping a tally of the ratio of costs and benefits of forming and maintaining a relationship with others (Rusbult & Van Lange, 2003).

