Related Experiment Video
Updated: May 28, 2026
06:18
The Collective Trust Game: An Online Group Adaptation of the Trust Game Based on the HoneyComb Paradigm
Published on: October 20, 2022
Community First Theory: How Collective Organization Generates Individual Diversity
Takashi Ikegami1,2, Hiroki Kojima1,2, Akiko Kashiwagi3,4
1Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan.
Entropy (Basel, Switzerland)
|May 26, 2026
Summary
Community First Theory suggests collective organization generates individual identity. In Tetrahymena, this community structure drives behavioral diversity and phenotypic divergence, challenging traditional views of individuality.
Area of Science:
- Collective behavior
- Systems biology
- Developmental biology
Background:
- Collective systems display emergent properties not reducible to individuals.
- A key question is whether individuality precedes or arises from collective organization.
Purpose of the Study:
- To test Community First Theory, proposing collective organization as the source of individual dynamical identity.
- To introduce and operationalize non-trivial information closure (NTIC) as a measure of individual vs. collective determination of temporal predictability.
Main Methods:
- Developed and empirically tested Community First Theory.
- Introduced non-trivial information closure (NTIC) metric.
- Utilized high-resolution tracking of Tetrahymena populations over four generations.
Main Results:
- Information closure emerged transiently during the cell cycle, between phases of strong collective coupling.
- Cells in the information-closed state exhibited greater phenotypic divergence from parents.
- Community organization was shown to actively generate behavioral diversity.
Conclusions:
- Provided initial empirical support for Community First Theory in Tetrahymena.
- Demonstrated that NTIC can identify agency transitions in collective systems.
- Suggests collective organization is a generative substrate for individual identity and diversity.
Related Concept Videos
01:25Impact of Individuals on a Group
In social psychology, the interplay between individuals and groups is a central concern, particularly regarding how individual actions and characteristics influence group processes and outcomes. While much research emphasizes the group's power in shaping individual behavior, it is equally significant to understand how individuals contribute to the functioning, development, and success of groups.Individual Roles in Group Productivity and Decision-MakingIndividuals are not passive participants in...
01:23The Role of Culture
Culture plays a crucial role in shaping self-identity and influencing thought and behavior, a foundational interest within social psychology. The multicultural perspective recognizes that individuals do not exist in a vacuum; instead, their experiences, perceptions, and actions are deeply influenced by the intersecting dimensions of their cultural, ethnic, and social group affiliations.Cultural Influence on Self-Identity and Social PerceptionCultural frameworks inform how individuals define...
01:30Self Within Cultural Contexts
Cultural frameworks for understanding the self are often categorized into two broad orientations: individualism and collectivism. These paradigms influence how people define themselves, relate to others, and interpret their social worlds. Each orientation offers distinct perspectives on autonomy, responsibility, and the role of the individual within a community.Individualistic CulturesIn individualistic cultures like North America and Western Europe, identity is understood as autonomous and...
01:28Impact of Groups on Individuals
Groups play a fundamental role in shaping individual behavior, as they establish norms that guide interactions and decision-making. Social psychology examines how individuals conform to group expectations, often adjusting their attitudes and actions to align with group norms. These norms can be formal, such as workplace policies, or informal, such as unspoken social expectations within a fraternity.Conformity and Social InfluenceConformity arises when individuals modify their behaviors or...
01:19Impact of Groups on Groups
Social psychologists analyze how groups influence one another, shaping social structures and interactions through both cooperation and competition. These dynamics manifest in various ways, ranging from economic partnerships to intergroup conflicts that shape societal structures and perceptions.Cooperation and Competition in Intergroup RelationsIntergroup relationships vary across contexts, sometimes fostering cooperation and mutual benefit while at other times leading to conflict and...
01:31In- and Out-Groups
People all belong to a gender, race, age, and social economic group. These groups provide a powerful source of our identity and self-esteem (Tajfel & Turner, 1979) and serve as our in-groups. An in-group is a group that we identify with or see ourselves as belonging to.