how connection developsKnowing that another person will help can change what a demanding situation requires of us before any help is given. In their 2015 account of Social Baseline Theory, James Coan and David Sbarra propose that the brain anticipates access to other people as part of its ordinary working environment. Familiar, reliable relationships belong among the resources it takes into account when responding to risk and deciding how much effort a situation requires.
The paper develops a theoretical explanation from research on relationships, perception, threat, and the self. It brings together selected studies rather than reporting a new experiment or systematically combining their results. Its central proposal is that access to trusted others helps shape what a person expects to manage, making relationships part of the conditions in which everyday life unfolds.
What counts as the starting point
A baseline is the condition against which a change is compared. In a brain-imaging experiment, that starting point often involves someone lying alone in a scanner. A researcher may then introduce a task, a threat, or another person and observe what differs.
Coan and Sbarra ask whether being alone is always the most informative starting point. If the brain ordinarily expects access to social resources, being alone could itself introduce a demand. The presence of a familiar person might bring the situation closer to an expected condition in which some responsibilities and risks can be shared.
This proposal changes how support is understood. A relationship can contribute to the resources on which ordinary functioning depends, alongside the help it provides during a particular difficulty. Its value may be expressed through the work a person does not have to anticipate carrying alone.
The theory concerns expected access to reliable people. Physical proximity and usable support are different things. Familiarity, trust, shared attention, and some alignment of goals help explain why one person’s presence could alter a situation differently from another’s.
Sharing risk and sharing work
The authors distinguish two functions of social resources. The first is distributing risk. In their account, being among others can reduce the vigilance or exposure required of any one individual. The second is sharing the work involved in reaching common goals.
Those functions overlap, but they make different contributions. As a general illustration, several people watching for a problem distribute the responsibility for noticing it. People dividing the tasks needed to complete a project share the effort of doing it. Both arrangements change what any one person needs to carry, although the benefit depends on what others can reliably contribute.
Coan and Sbarra connect these ideas to the brain’s assessment of demands. A situation has both requirements and available resources. If a trusted person can meet some of those requirements, one’s own resources may be conserved or directed elsewhere. The authors propose that the brain incorporates this anticipated contribution when assessing the cost of acting.
The authors use the language of energy to describe this proposed budgeting of resources. Their account connects what people expect to manage with the effort they may need to invest. The studies they draw on measured different parts of that picture, including perceptions and brain responses, rather than directly establishing how much energy a relationship conserves.
How demanding a situation appears
One study discussed in the paper examined how steep a hill appeared when a friend was present. Participants with a friend beside them reported a less steep incline. Coan and Sbarra placed this finding alongside research linking perceptions of hills and distances with people’s available physical resources. Their interpretation was that anticipated support could also enter the assessment of a demand.
The outcome was a judgment of steepness. It did not establish that participants used less energy climbing the hill. Its contribution to the theory concerns how a situation appears before acting, when people are assessing what it would take. The distinction between an expected demand and the effort actually expended remains important throughout the paper.
A smaller demand for regulation
Research on supportive handholding provides one important part of the authors’ argument. In studies they review, people facing threat showed reduced activity in parts of the brain associated with threat processing when a supportive person was available. Some of the regions involved in regulation were less active as well.
That second observation matters to the explanation. One possible account of support would be that another person helps someone activate more effortful control over an otherwise unchanged threat response. Coan and Sbarra instead interpret the pattern as consistent with a reduction in perceived demand. The situation may call for less regulatory work because more resources are understood to be available.
They also describe evidence that the effects of support vary with relationship quality, intimacy, mutuality, and earlier social experience. In the theory, these differences help explain expectations. A person’s history provides information about whether others are likely to be available and useful when needed. The same outward offer of support may consequently enter different expectations about what will happen next.
The imaging results are consistent with this explanation, though reduced activity does not by itself establish which process changed or how much energy was conserved. The theory gives researchers a way to ask how another person’s availability changes the anticipated demand, alongside what happens once distress has developed.
The support we expect
The paper also describes two daily-diary studies that compared received emotional support with each person’s estimated usual level. Receiving less support than expected was associated with worse mood and feelings about the relationship. Receiving support at or above that level was associated with little or no change in those feelings. The pattern appeared among people with both higher and lower baselines.
This finding gives reliability a particular place in the account. The support someone ordinarily receives may already be part of what they expect when approaching the day. Meeting that expectation need not produce a noticeable lift in mood for its absence to matter. At the same time, the studies complicate the idea that simply providing more support will always help more.
In a shared responsibility, this distinction directs attention to what each person understands the arrangement to be. Knowing what someone has offered and what they can realistically provide gives both people clearer information to plan with. That is a practical implication of the theory, rather than a communication method tested by the diary studies.
Including another person among your resources
A further part of the model concerns how close others become represented in the self. Coan and Sbarra review imaging evidence in which responses to threats directed toward a familiar person resembled responses to threats directed toward oneself more than did responses to threats directed toward a stranger.
They interpret this overlap as relevant to how a relationship can extend the resources a person expects to have available. When another person can be counted on to meet part of a demand, planning can take that contribution into account. What can be managed through the relationship becomes part of what the individual expects to be possible.
The neural similarities are evidence the authors use to develop this proposal. They do not make two people interchangeable. The useful distinction is between the resources someone possesses individually and the resources they can depend on through a relationship. Both can shape the life they are able to organize.
Reorganizing after a relationship ends
The same account helps the authors examine loss. If a relationship has become part of the resources a person anticipates, its ending changes more than the presence of a companion. Demands that were shared may now require different arrangements. Plans and expectations formed around that relationship also need to be reconsidered.
Coan and Sbarra connect this process with research on self-concept, meaning a person’s understanding of who they are. The studies they discuss associate romantic breakups with reduced clarity in that understanding. They also describe longitudinal evidence linking the recovery of an independent sense of self with subsequent improvements in psychological wellbeing.
In their model, recovery may involve learning how to organize life with a changed set of available resources. The authors proposed that reorganizing the relationship between one’s sense of self and the former partner could contribute to recovery. The longitudinal findings supported a link between self-understanding and later wellbeing, while leaving the proposed pathway through resource demands unresolved. The paper also left open how new relationships contribute and how the process differs among people.
This makes room for the practical and personal dimensions of loss in the same explanation. Someone may be adapting to changed responsibilities while also rebuilding the expectations through which daily life previously made sense.
Studying people within their relationships
The authors place Social Baseline Theory alongside attachment theory. Their emphasis is on broad processes of risk, effort, and available resources, while attachment theory offers a more developed account of particular bonds and patterns of relating. The two approaches can inform each other without answering exactly the same questions.
They also identify implications for research and care. Experiments conducted only with people alone may capture a different pattern of functioning from experiments in which trusted others are present. Treatment research can examine how relationships participate in managing demands, alongside its attention to individual skills and symptoms.
The availability of reliable people becomes part of the situation being studied. A person may bring their own skills and experience, an agreement to share a responsibility, and confidence that someone will respond if needed. An account of what they can manage includes what they know how to do and whom they can count on.
Sources
Coan, J. A., & Sbarra, D. A. (2015). Social Baseline Theory: The social regulation of risk and effort. Current Opinion in Psychology, 1, 87–91. Read the full paper.