Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Social Facilitation01:04

Social Facilitation

31.8K
Not all intergroup interactions lead to negative outcomes. Sometimes, being in a group situation can improve performance. Social facilitation occurs when an individual performs better when an audience is watching than when the individual performs the behavior alone. This typically occurs when people are performing a task for which they are skilled.
31.8K
Unsoundness of Aggregate due to Volume Change01:26

Unsoundness of Aggregate due to Volume Change

98
Unsoundness in aggregates due to volume changes is primarily caused by the physical alterations aggregates undergo, such as freezing and thawing, thermal changes, and wetting and drying. Unsound aggregates, when subjected to these changes, result in volume change upon disintegration. This, in turn, contributes to the deterioration of concrete, including scaling, pop-outs, and cracking. Particular types of aggregates, such as porous flints, cherts, and those containing clay minerals, are...
98
Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

561
Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.
561
Interference: Path Lengths01:10

Interference: Path Lengths

1.3K
Consider two sources of sound, that may or may not be in phase, emitting waves at a single frequency, and consider the frequencies to be the same.
Two special sources may be considered when they are in phase. This can be easily achieved by feeding the two sources from the same source. An example would be synchronizing the two speakers by feeding them with the same source, such as the sound waves produced by a tuning fork. This setup ensures that the two sources have the same frequency and are...
1.3K
Cooperative Allosteric Transitions01:58

Cooperative Allosteric Transitions

7.9K
Cooperative allosteric transitions can occur in multimeric proteins, where each subunit of the protein has its own ligand-binding site. When a ligand binds to any of these subunits, it triggers a conformational change that affects the binding sites in the other subunits; this can change the affinity of the other sites for their respective ligands. The ability of the protein to change the shape of its binding site is attributed to the presence of a mix of flexible and stable segments in the...
7.9K
Social Loafing01:37

Social Loafing

34.6K
Another way in which a group presence can affect performance is social loafing—the exertion of less effort by a person working together with a group. Social loafing occurs when our individual performance cannot be evaluated separately from the group. Thus, group performance declines on easy tasks (Karau & Williams, 1993). Essentially individual group members loaf and let other group members pick up the slack. Because each individual’s efforts cannot be evaluated,...
34.6K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The effect of the fitness gradient on fixation probability.

Nature communications·2026
Same author

Promoters of cooperation in evolutionary games.

Proceedings of the National Academy of Sciences of the United States of America·2025
Same author

Time-Dependent Strategies in Repeated Asymmetric Public Goods Games.

Dynamic games and applications·2025
Same author

Maintaining diversity in structured populations.

PNAS nexus·2025
Same author

Unilateral incentive alignment in two-agent stochastic games.

Proceedings of the National Academy of Sciences of the United States of America·2025
Same author

Hardware-optimal quantum algorithms.

Proceedings of the National Academy of Sciences of the United States of America·2025

Related Experiment Video

Updated: Jun 5, 2025

The HoneyComb Paradigm for Research on Collective Human Behavior
06:48

The HoneyComb Paradigm for Research on Collective Human Behavior

Published on: January 19, 2019

9.3K

Density amplifiers of cooperation for spatial games.

Jakub Svoboda1, Krishnendu Chatterjee1

  • 1Institute of Science and Technology Austria, Klosterneuburg 3400, Austria.

Proceedings of the National Academy of Sciences of the United States of America
|December 6, 2024
PubMed
Summary
This summary is machine-generated.

This study introduces novel network structures that promote cooperation in spatial games, even with low initial cooperation and strong temptation to defect. These networks ensure cooperation spreads efficiently across populations in the strong selection regime.

Keywords:
cooperationevolutionary dynamicsspatial games

More Related Videos

The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition
05:15

The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition

Published on: February 19, 2018

10.8K
The Collective Trust Game: An Online Group Adaptation of the Trust Game Based on the HoneyComb Paradigm
06:18

The Collective Trust Game: An Online Group Adaptation of the Trust Game Based on the HoneyComb Paradigm

Published on: October 20, 2022

2.0K

Related Experiment Videos

Last Updated: Jun 5, 2025

The HoneyComb Paradigm for Research on Collective Human Behavior
06:48

The HoneyComb Paradigm for Research on Collective Human Behavior

Published on: January 19, 2019

9.3K
The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition
05:15

The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition

Published on: February 19, 2018

10.8K
The Collective Trust Game: An Online Group Adaptation of the Trust Game Based on the HoneyComb Paradigm
06:18

The Collective Trust Game: An Online Group Adaptation of the Trust Game Based on the HoneyComb Paradigm

Published on: October 20, 2022

2.0K

Area of Science:

  • Evolutionary Game Theory
  • Network Science
  • Computational Social Science

Background:

  • Spatial games model cooperation evolution on networks.
  • The Prisoners' Dilemma is a key payoff structure.
  • Fixation of cooperation under strong selection remains a challenge.

Purpose of the Study:

  • To identify network structures promoting cooperation fixation.
  • To address the challenge of low initial cooperation rates.
  • To investigate networks in the strong selection regime.

Main Methods:

  • Mathematical modeling of spatial games.
  • Design and analysis of specific network structures.
  • Analysis of cooperation fixation probability.

Main Results:

  • Novel network structures identified that ensure high cooperation fixation probability.
  • Cooperation spreads even with low initial density and high defection temptation.
  • Spreading time is at most quadratic in network size, with constant degrees.

Conclusions:

  • Existence of networks that guarantee cooperation spread in strong selection is confirmed.
  • These networks offer robust mechanisms for cooperation evolution.
  • The findings have implications for understanding cooperation in structured populations.