Seriality is a key concept for understanding groups.
Seriality explains why some publics remain passive and fragmented while others suddenly unite and “click” into place.
It’s a matter of context.
Here we go:
Seriality: Context Matters
“Seriality” is a concept that emerges from identity and social theory, particularly in the works of philosophers like Jean-Paul Sartre and Iris Marion Young. It refers to how individuals are grouped based on shared characteristics without a strong sense of belonging or identity.

Sartre argued that passive collectives, like people waiting at a bus stop, only become active when they recognise shared interests or struggle. Many publics remain “serial” (inactive) until activated by context. 1Sartre, J.-P. (1991). Critique of dialectical reason (Vol. 2, Q. Hoare, Trans.; A. Sheridan-Smith, Ed.). Verso. (Original work published 1985.) 2Silfwer, J. (2023, October 9). Five Types of Publics. Doctor Spin | The PR Blog. https://doctorspin.net/five-types-of-publics/
“Seriality is a key concept in understanding the constancy and transformation of identity, particularly in public presentations of the self and its online manifestations.”
Source: M/C Journal 3Marshall, P. (2014). Seriality and Persona. M/C Journal, 17, 1 – 10. https://doi.org/10.5204/mcj.802
In Sartre’s existentialist framework, seriality describes a form of social collectivity. According to him, people can be part of a series without necessarily sharing a unified group identity. For example, people waiting at a bus stop are connected by their shared situation (waiting for the bus) but do not necessarily form a cohesive public with a shared identity. They are separate individuals linked by a common objective or condition.
Key insights:
Seriality explains why some publics remain inactive and fragmented while others suddenly unite and how context (media, conflict, proximity, power structures) determines when, how, and why a group identity “clicks” into place.
Therefore, seriality is a way of understanding how individuals can belong to collective categories without necessarily having a shared demographic identity.
Learn more: Seriality (Context Matters)
The Publics in Public Relations
Publics are a central component of public relations — in fact, the ‘P’ in PR. However, they are often misunderstood or conflated with marketing’s ‘target groups’.
Here’s how to define publics in public relations:
Publics = psychographic segments (who) with similar communication behaviours (how) formed around specific issues (why) impacting a brand (to whom). 6Silfwer, J. (2015, June 11). The Publics in Public Relations. Doctor Spin | The PR Blog. https://doctorspin.net/publics-in-public-relations/
Please note:
Psychographic segment = similarities in cognitive driving factors such as reasoning, motivations, attitudes, etc.
Communication behaviours = how the public’s opinion is expressed (choice of message, rhetorical framing, and medium type).
Specific issue = determined situationally by a specific social object, often high on the agenda in news media or social media.
Learn more: The Publics in Public Relations
Five Types of Publics
There are plenty of inactive publics around us in society, just “waiting” for external situations to activate them and bring them together in coöperative, communicative behaviours.
However, PR tends to focus on the already activated publics:
“By focusing on activism and its consequences, recent public relations theory has largely ignored inactive publics, that is, stakeholder groups that demonstrate low levels of knowledge and involvement in the organisation or its products, services, candidates, or causes, but are important to an organisation.”
Source: Public Relations Review 7Hallahan, K. (2000). Inactive publics: The forgotten publics in public relations. Public Relations Review, 26(4), 499 – 515. https://doi.org/10.1016/S0363-8111(00)00061 – 8
Kirk Hallahan, Professor Emeritus, Journalism and Media Communication, Colorado State University, proposes five types of publics based on their knowledge and involvement: 8Hallahan, K. (2000). Inactive publics: The forgotten publics in public relations. Public Relations Review, 26(4), 499 – 515. https://doi.org/10.1016/S0363-8111(00)00061 – 8
Hallahan suggests a model based on knowledge and involvement:
As an organisation targeted by activists, what would be the best issue response? Hallahan proposes four principal response strategies: 9Hallahan, K. (2009, November 19). The Dynamics of Issues Activation and Response: An Issues Processes Model. Journal of Public Relations Research. … Continue reading
Learn more: Five Types of Publics
Social Group Sizes (For Social Brains)
How many social connections you you comfortably sustain? According to the social brain hypothesis, limits exist. 10Zhou WX, Sornette D, Hill RA, Dunbar RI. Discrete hierarchical organization of social group sizes. Proc Biol Sci. 2005 Feb 22;272(1561):439 – 44.
“The ‘social brain hypothesis’ for the evolution of large brains in primates has led to evidence for the coevolution of neocortical size and social group sizes, suggesting that there is a cognitive constraint on group size that depends, in some way, on the volume of neural material available for processing and synthesizing information on social relationships.”
Source: Proceedings of the Royal Society B: Biological Sciences 11Zhou, X., Sornette, D., Hill, R. A., & M. Dunbar, R. I. (2005). Discrete hierarchical organization of social group sizes. Proceedings of the Royal Society B: Biological Sciences, 272(1561), … Continue reading
Scientific evidence suggests that people tend to organise themselves not in an even distribution of group sizes but in discrete hierarchical social groups of more particular sizes:
Alas, there seems to be a discrete statistical order in the complex chaos of human relationships:
“Such discrete scale invariance could be related to that identified in signatures of herding behaviour in financial markets and might reflect a hierarchical processing of social nearness by human brains.“
Source: Proceedings of the Royal Society B: Biological Sciences 12Zhou, X., Sornette, D., Hill, R. A., & M. Dunbar, R. I. (2005). Discrete hierarchical organization of social group sizes. Proceedings of the Royal Society B: Biological Sciences, 272(1561), … Continue reading
Read also: Group Sizes (The Social Brain Hypothesis)
THANKS FOR READING.
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Annotations
| 1 | Sartre, J.-P. (1991). Critique of dialectical reason (Vol. 2, Q. Hoare, Trans.; A. Sheridan-Smith, Ed.). Verso. (Original work published 1985.) |
|---|---|
| 2, 5 | Silfwer, J. (2023, October 9). Five Types of Publics. Doctor Spin | The PR Blog. https://doctorspin.net/five-types-of-publics/ |
| 3 | Marshall, P. (2014). Seriality and Persona. M/C Journal, 17, 1 – 10. https://doi.org/10.5204/mcj.802 |
| 4 | Anderson, B. (2006). Imagined communities: Reflections on the origin and spread of nationalism (Revised ed.). Verso. (Original work published 1983) |
| 6 | Silfwer, J. (2015, June 11). The Publics in Public Relations. Doctor Spin | The PR Blog. https://doctorspin.net/publics-in-public-relations/ |
| 7, 8 | Hallahan, K. (2000). Inactive publics: The forgotten publics in public relations. Public Relations Review, 26(4), 499 – 515. https://doi.org/10.1016/S0363-8111(00)00061 – 8 |
| 9 | Hallahan, K. (2009, November 19). The Dynamics of Issues Activation and Response: An Issues Processes Model. Journal of Public Relations Research. https://www.tandfonline.com/doi/abs/10.1207/S1532754XJPRR1301_3 |
| 10 | Zhou WX, Sornette D, Hill RA, Dunbar RI. Discrete hierarchical organization of social group sizes. Proc Biol Sci. 2005 Feb 22;272(1561):439 – 44. |
| 11, 12 | Zhou, X., Sornette, D., Hill, R. A., & M. Dunbar, R. I. (2005). Discrete hierarchical organization of social group sizes. Proceedings of the Royal Society B: Biological Sciences, 272(1561), 439 – 444. https://doi.org/10.1098/rspb.2004.2970 |
