Territoriality

Abstract

Territoriality is a form of spatial behavior in which an individual or group claims, marks, and defends a place or object against intrusion by others. It operates at several scales, from the home and the neighborhood block to the desk, the job role, and the idea, serving functions of privacy regulation, identity, and the orderly control of resources. Psychologists distinguish primary territories that are central to daily life and strongly defended from secondary and public territories that are shared and only loosely held. Marking, personalization, and anticipatory defense signal ownership and usually prevent conflict before it begins. This article reviews the concept across environmental, social, and organizational psychology, examining how territorial functioning shapes residential security, workplace behavior, and the psychological ownership of tangible and intangible targets.

Keywords: territoriality, personal space, defensible space, psychological ownership

Human territoriality is among the oldest subjects in environmental psychology, organized for the field by Edney's survey of how people claim, bound, and hold space (Edney, 1974). The concept sits alongside privacy, personal space, and crowding in a single framework of how people regulate the boundary between themselves and others (Altman, 1975). Where early work concentrated on homes and neighborhoods, later research carried the same logic into the workplace, treating offices, roles, and even ideas as targets that employees claim and protect (Brown, Lawrence, & Robinson, 2005).

What Territoriality Is

Territoriality denotes a set of behaviors and cognitions through which a person or group lays claim to a physical or social object and communicates that claim to others (Edney, 1974). It is best understood not as a drive to fight but as one tool in a broader system of boundary regulation, the continuous adjustment of how much contact a person has with others (Altman, 1975). Where personal space is a portable bubble carried from place to place, a territory is anchored to a location or object and is defended in the owner's absence as well as presence. The distinction grows out of Hall's proxemics, the study of how people structure and use the space around them, which first framed interpersonal distance as a patterned, culturally shaped system rather than mere physical separation (Hall, 1966).

Altman distinguished three kinds of territory by how central they are to the holder's life and how vigorously they are defended. A primary territory, such as a home or a bedroom, is owned long term, is central to identity, and is defended strongly. A secondary territory, such as a regular seat in a cafe or a club's usual table, is semi-public and only moderately controlled. A public territory, such as a park bench or a library desk, is available to anyone and is held only while it is occupied. The same physical place can shift category with use, and the typology is a continuum of control rather than three sealed boxes.

Use the demonstration below to compare the three kinds of territory on the dimensions Altman emphasized: centrality to the self, expected duration of control, and the strength of defense a holder will mount.

Demo 1 — Altman’s Three Kinds of Territory

Altman sorted territories by how central they are to the holder and how vigorously they are defended. Choose a type to see its profile on three dimensions. The kinds form a continuum of control, not three sealed boxes: the same physical place can shift category with use.

Central to identity, owned long term, and strongly defended. The place a person treats as unquestionably theirs.

Marking, Personalization, and Defense

Most territoriality is signaled rather than fought. Marking is the placement of an object or sign that announces a claim, such as a coat on a chair or a nameplate on a door, while personalization is the fuller decoration of a space to express identity and occupancy (Brown, 2009). These cues work preventively: a clearly marked space is rarely challenged, so the owner seldom has to defend it actively. Anticipatory marking is therefore the common case, and overt defense is the exception that appears only when a claim is ambiguous or contested.

In a classic field study, Brown and Altman found that homes displaying more territorial markers, such as personalized entrances, barriers, and signs of active use, were burglarized less often than otherwise similar homes, because the cues advertised that residents watched and controlled the space (Brown & Altman, 1983). Taylor's program of research generalized this to the street block, arguing that territorial functioning, the everyday cognitions and behaviors that attach residents to near-home space, predicts both informal social control and residents' fear of crime (Taylor, 1988).

Territoriality and the Built Environment

Oscar Newman's doctrine of defensible space translated territoriality into architecture, arguing that site plans which let residents see and feel responsible for the ground around their dwellings reduce crime (Newman, 1972). Four design levers recur in this literature: territorial markers that extend the sense of ownership outward, natural surveillance that keeps the space visible, access control that channels who can enter, and a well-kept image that signals care and occupancy. The demonstration below combines these into a single defensible-space index so their joint effect can be explored.

Demo 2 — Defensible-Space Index

Newman’s defensible-space idea rests on four design levers. Set each from 0 to 25 and watch them sum into a single 0-to-100 index. The interpretation band shifts from weak to moderate to strong at the thresholds of 34 and 67. This is the same additive index worked through in the example below the demonstrations.

Territoriality in Organizations

The same claiming-and-defending logic reappears at work. Brown, Lawrence, and Robinson defined organizational territoriality as the behavioral expression of feelings of ownership toward a physical or social target, and argued that it is woven through office life, from workstations to projects and relationships (Brown, Lawrence, & Robinson, 2005). Its engine is psychological ownership, the sense that a target is mine that develops when a person controls, invests themselves in, and comes to know a target intimately (Pierce, Kostova, & Dirks, 2003). Ownership gives rise to two broad behaviors: marking, which communicates a claim, and defending, which repels anticipated or actual infringement (Brown, 2009).

These behaviors cut both ways. Territorial marking of a workspace can secure the focus and identity an employee needs, but defending can wall off resources and knowledge from colleagues. Experimental work shows that when people mark their turf, others read the signal and rein in their own contributions: territorial marking by one party lowered the creativity others were willing to offer (Brown & Baer, 2015). Whether ownership helps or harms depends on the climate; territorial behavior is less likely to damage standing as a team contributor when the work environment is high in trust (Brown, Crossley, & Robinson, 2014). The physical office matters too, since shared and open workspaces can raise ownership tensions and the territorial responses that follow (Brown & Zhu, 2016).

Demo 3 — Ownership, Defending, and Others’ Creativity

In organizations, territoriality grows from psychological ownership. Raise the sense of ownership and watch marking and defending both climb. Defending carries a cost: it lowers the creativity colleagues are willing to contribute. Toggle a high-trust climate to see that cost shrink, as the field’s evidence suggests it does.

The pattern is illustrative, but its shape matches the literature: ownership fuels both the useful marking that secures focus and the defending that can wall colleagues off, while trust determines how much that defending actually costs the team.

A meta-analysis of psychological ownership across 141 samples confirmed that ownership has a recognized dark side: along with its benefits for motivation and stewardship, it reliably predicts territorial behaviors toward the owned target (Zhang et al., 2021). Reflecting two decades later on how the idea entered management, Brown noted that territoriality had been studied in nearly every discipline except, at first, his own, and that naming it in organizations made a familiar workplace experience newly visible (Brown, 2024).

Worked Example

Consider two residential blocks scored on the four defensible-space levers, each rated from 0 to 25 points, giving an index from 0 to 100. A low-rise block with strong resident control scores 20 for territorial markers, 22 for natural surveillance, 15 for access control, and 18 for image, for an index of 20 + 22 + 15 + 18 = 75. A poorly designed high-rise scores 6, 8, 5, and 7 on the same levers, for an index of 6 + 8 + 5 + 7 = 26. The gap of 75 - 26 = 49 points, just under half of the 100-point scale, captures in one number the difference in how far residents can extend and defend their near-home territory. The demonstration above uses exactly this additive index, so moving a single slider by five points changes the total by five, and the interpretation band (weak, moderate, or strong defensible space) updates at the thresholds of 34 and 67.

Key Researchers

Irwin Altman

(b. 1930). Distinguished Professor Emeritus at the University of Utah; he placed territory within a general theory of boundary regulation and defined the primary, secondary, and public typology. Wikipedia

Barbara B. Brown

(living). Environmental psychologist at the University of Utah; with Altman she linked residential territorial markers and place attachment to burglary risk. Google Scholar

Graham Brown

(living). Organizational scholar at the University of Victoria; he introduced territoriality into organizational behavior and built measures of workspace territoriality. ORCID

Edward T. Hall

(1914-2009). American anthropologist who founded proxemics, the study of the cultural patterning of interpersonal distance, the conceptual neighbor of territory. Wikipedia

Oscar Newman

(1935-2004). Architect and city planner whose defensible-space doctrine turned territoriality into design principles for crime prevention. Wikipedia

Ralph B. Taylor

(living). Professor Emeritus of Criminal Justice at Temple University; his empirical account of human territorial functioning tied near-home territory to social control and fear of crime. Google Scholar

Discussion

Across its scales, territoriality is better read as social regulation than as hostility. Its usual products are quiet: a nameplate, a fence, a familiar seat, a decorated cubicle. Each advertises a claim so clearly that disputes rarely arise, which is why the behavior looks preventive and orderly rather than aggressive most of the time (Edney, 1974). The boundary-regulation view explains why the same act can be adaptive or costly: a marker that gives a resident a sense of control and security is the same kind of signal that, drawn around a shared work resource, can exclude a colleague (Altman, 1975).

That double edge is clearest in organizations, where psychological ownership motivates stewardship and care but also seeds defending that can fragment teams (Brown, Lawrence, & Robinson, 2005). The practical lesson from both the residential and the workplace literatures is that design and climate shape which face appears. Defensible layouts and high-trust environments let ownership do its constructive work; crowded, low-control, or low-trust settings invite the defensive responses that territoriality can also produce.

Current Directions

Recent work has sharpened the organizational account. The 2021 meta-analysis established, across 141 samples, that territorial behavior is a robust dark-side correlate of psychological ownership rather than an occasional byproduct, giving the field a quantitative anchor for the ownership-to-territoriality path (Zhang et al., 2021). Attention has turned to the physical and social conditions that tip ownership toward defending, including open-plan and shared workspaces, where felt ownership is contested and territorial responses more likely (Brown & Zhu, 2016). A reflective reassessment of the founding theory has also prompted the field to revisit how territory over intangible targets, such as ideas and roles, should be measured and when it helps or harms performance (Brown, 2024). Open questions concern how remote and hybrid work, which weakens physical marking, reshapes claims over digital and social targets, and how trust-building interventions might convert defensive ownership into contribution (Brown, Crossley, & Robinson, 2014).

Common Misconceptions

Territoriality is basically aggression.

It is mainly preventive signaling; marking and personalization avert conflict so that overt defense is rare (Brown, 2009).

Territory and personal space are the same thing.

Personal space is a portable bubble around the body, whereas a territory is fixed to a place or object and defended even in the owner's absence (Altman, 1975).

Territoriality only concerns physical space.

In organizations people claim intangible targets as well, including ideas, roles, and relationships (Brown, Lawrence, & Robinson, 2005).

Glossary

Access control.

Design features such as gates, fences, and single entries that define who may legitimately enter a space.

Boundary regulation.

Altman's view that people continuously adjust how much contact they have with others, with territory as one regulating mechanism.

Defensible space.

A residential design in which physical layout lets inhabitants perceive and control nearby ground, deterring crime.

Infringement.

An actual or anticipated intrusion on a claimed target that may trigger defending behavior.

Marking.

Placing an object or sign that announces a claim to a space or target, such as a coat on a chair.

Natural surveillance.

The capacity of a layout to keep space visible to residents, so that intrusion is easily noticed.

Personal space.

The portable zone around the body whose intrusion causes discomfort, distinct from a fixed territory.

Personalization.

The decoration of a space to express identity and occupancy, a fuller form of marking.

Primary territory.

A space central to the holder's life, owned long term and strongly defended, such as a home.

Proxemics.

Hall's study of the cultural patterning of interpersonal distance and the human use of space.

Psychological ownership.

The felt sense that a target is mine, arising from control over, investment in, and knowledge of the target.

Public territory.

A space open to anyone and held only while it is occupied, such as a park bench.

Secondary territory.

A semi-public space moderately controlled by regular users, such as a usual seat in a cafe.

Territorial functioning.

Taylor's term for the everyday cognitions and behaviors that attach people to near-home space.

Territoriality.

The claiming, marking, and defending of a place or object against intrusion by others.

Frequently Asked Questions

What is territoriality in psychology?

It is the set of behaviors and cognitions by which a person or group claims, marks, and defends a place or object against others, functioning to regulate social boundaries rather than simply to attack (Edney, 1974).

How is territory different from personal space?

Personal space is a portable zone carried around the body, while a territory is anchored to a fixed place or object and is defended even when the owner is away (Altman, 1975).

What are the three types of territory?

Altman distinguished primary territories that are central and strongly defended, secondary territories that are semi-public and moderately held, and public territories that are open to all and kept only while occupied (Altman, 1975).

Does marking a space really prevent intrusion?

Field evidence suggests it does; homes with more territorial markers were burglarized less often, because the cues signal that residents watch and control the space (Brown & Altman, 1983).

What is defensible space?

It is a residential design approach in which site layout lets inhabitants see and feel responsible for nearby ground, which deters crime by strengthening territorial control (Newman, 1972).

Can people be territorial about things that are not physical?

Yes; in organizations employees claim intangible targets such as ideas, roles, and relationships, not only desks and offices (Brown, Lawrence, & Robinson, 2005).

Where does workplace territoriality come from?

It grows from psychological ownership, the felt sense that a target is mine, which develops through controlling, investing in, and knowing the target (Pierce, Kostova, & Dirks, 2003).

Is territoriality at work harmful?

It can be either helpful or harmful; marking can protect focus, but defending can suppress collaboration, and a meta-analysis confirms territorial behavior as a reliable dark side of ownership (Zhang et al., 2021).

References