Social work theory · Volume H: Integrative & Practice-Oriented

Biopsychosocial perspective

The biopsychosocial perspective holds that health, illness and distress arise from the interaction of biological, psychological and social factors, and that none of these levels can be understood in isolation.

1. What it is

The biopsychosocial perspective holds that health, illness and distress arise from the interaction of biological, psychological and social factors, and that none of these levels can be understood in isolation. The psychiatrist George Engel (1977) proposed it as an alternative to the biomedical model, which explained disease solely through bodily processes. Engel argued that the same biological condition can lead to very different experiences and outcomes depending on a person’s beliefs, emotions, relationships and circumstances. For social work, the perspective offers a shared language with health professionals and a structure for comprehensive assessment that keeps the social dimension in view (Connolly & Harms, 2015).

The biological dimension. The biological dimension includes genetic inheritance, physical health, illness and injury, disability, neurological development, substance effects, medication, sleep and nutrition. Social workers do not diagnose these conditions, but they need to understand how they affect functioning and how they interact with stress and social disadvantage (Engel, 1980).

The psychological dimension. The psychological dimension covers thoughts, emotions, beliefs, coping styles, personality, mental health, trauma history, and the meaning a person gives to their situation. Engel (1977) emphasised that how a patient understands their symptoms shapes whether they seek help, how they report distress and how they respond to treatment.

The social dimension. The social dimension includes relationships, family, culture, work, income, housing, education, social support, discrimination and access to services. These factors shape exposure to illness, the resources available for recovery, and the consequences of illness for daily life. The social dimension links the perspective to the social determinants of health (Family C).

Engel’s systems basis. Engel (1977, 1980) grounded the model in general systems theory. He described a hierarchy of natural systems, from cells and organs through the person to family, community, culture and society. A change at one level can affect every other level. In his 1980 paper, Engel illustrated this with a man whose heart attack was worsened by the distress of his admission to hospital, showing that psychological and social events could have physical consequences (Engel, 1980).

Biopsychosocial-spiritual extensions. Several writers have added a spiritual dimension. Sulmasy (2002) proposed a biopsychosocial-spiritual model for end-of-life care, arguing that illness disrupts a person’s relationships with their body, other people and what they regard as transcendent. Social work scholars have developed tools for spiritual assessment, such as spiritual histories and spiritual ecomaps, and argued that religion and spirituality are significant sources of meaning, coping and community for many clients (Canda & Furman, 2010; Hodge, 2001). For Aboriginal and Torres Strait Islander peoples, the social and emotional wellbeing model describes wellbeing through connection to body, mind and emotions, family and kin, community, culture, Country, and spirituality and ancestors, shaped by historical, political and social determinants (Gee et al., 2014). This model extends well beyond an additional spiritual domain and should be understood on its own terms.

Use in assessment. In practice, the perspective most often appears as a biopsychosocial assessment: a structured gathering of information under each heading, followed by a formulation showing how the factors interact. The World Health Organization’s (2001) International Classification of Functioning, Disability and Health adopts a biopsychosocial approach to disability, describing functioning as the outcome of health conditions, personal factors and environmental factors.

2. Historical development

The biopsychosocial perspective developed within psychiatry and medicine. Meyer’s psychobiology and psychosomatic medicine had already questioned a purely physical account of illness, and Grinker is often credited with using the term in the 1950s (Ghaemi, 2010). Engel (1977) gave the idea its definitive form. He was responding both to psychiatrists who wanted to align their discipline with biomedicine and to critics who denied that mental illness was illness at all. His solution was a scientific model broad enough to include the person and their context, grounded in systems theory (Borrell-Carrió et al., 2004).

The perspective became an independent framework because it offered a practical structure for assessment across disciplines. Social work adopted it readily because it matched the profession’s person-in-environment perspective and gave social workers a recognised place in multidisciplinary health teams. Australian hospital, mental health, aged care and disability services now commonly use biopsychosocial assessment, and social workers frequently take responsibility for the social component (Connolly & Harms, 2015).

3. Practical guidance

The biopsychosocial perspective is most useful as a structure for thorough assessment and shared formulation.

• Assess all three dimensions, and spirituality where relevant. Ask about health and medication, mood, coping and beliefs, relationships, income and housing, and sources of meaning. Do not assume that a problem presented as social has no biological component, or the reverse.
• Write an integrated formulation. List the predisposing, precipitating, perpetuating and protective factors across the dimensions, then explain how they interact. A list of headings without connections remains only a description (Borrell-Carrió et al., 2004).
• Ask about spirituality respectfully. A short open question, such as what gives the person strength or meaning, allows them to raise religion or spirituality if it matters to them (Hodge, 2001).
• Use the social dimension to advocate. In health settings, document how housing, income, carer stress or discrimination affect recovery. This evidence supports discharge planning, NDIS applications and referrals.
• Work with cultural models of wellbeing. With Aboriginal and Torres Strait Islander clients, use the social and emotional wellbeing framework and involve Aboriginal workers or community-controlled services where the client wishes (Gee et al., 2014).
• Collaborate across disciplines. Share the formulation with medical, nursing and allied health colleagues so that the team’s plan addresses all dimensions.

4. Critical evaluation

Strengths. The perspective is comprehensive and easy to communicate across professions. It counters biological reductionism, legitimises attention to the social determinants of health, and provides a natural place for social work in health care. Its systems foundation explains why interventions at one level, such as stable housing, can improve outcomes at another, such as mental health (Engel, 1977). The spiritual and cultural extensions have made assessment more responsive to diversity.

Limitations. Ghaemi (2010) argued that the model is so broad that it offers little guidance about which factors matter most in a particular case, and that it can justify an unprincipled eclecticism. In practice, assessments are often dominated by biomedical information, with the social component treated as background. The model describes individual circumstances and says little about power, inequality or the structures that produce disadvantage. Adding domains such as spirituality can also be done superficially, without the cultural knowledge needed to use them well.

Overall importance. The biopsychosocial perspective remains one of the most widely used assessment frameworks in health and human services. For social workers, its value lies in keeping the social dimension visible within systems that often privilege the biological. It works best when combined with explicit theory about how factors interact and with critical attention to structural causes.

5. References

• Borrell-Carrió, F., Suchman, A. L., & Epstein, R. M. (2004). The biopsychosocial model 25 years later: Principles, practice, and scientific inquiry. Annals of Family Medicine, 2(6), 576–582. https://doi.org/10.1370/afm.245
• Canda, E. R., & Furman, L. D. (2010). Spiritual diversity in social work practice: The heart of helping (2nd ed.). Oxford University Press.
• Connolly, M., & Harms, L. (2015). Social work: From theory to practice (2nd ed.). Cambridge University Press.
• Engel, G. L. (1977). The need for a new medical model: A challenge for biomedicine. Science, 196(4286), 129–136. https://doi.org/10.1126/science.847460
• Engel, G. L. (1980). The clinical application of the biopsychosocial model. American Journal of Psychiatry, 137(5), 535–544. https://doi.org/10.1176/ajp.137.5.535
• Gee, G., Dudgeon, P., Schultz, C., Hart, A., & Kelly, K. (2014). Aboriginal and Torres Strait Islander social and emotional wellbeing. In P. Dudgeon, H. Milroy, & R. Walker (Eds.), Working together: Aboriginal and Torres Strait Islander mental health and wellbeing principles and practice (2nd ed., pp. 55–68). Commonwealth of Australia.
• Ghaemi, S. N. (2010). The rise and fall of the biopsychosocial model: Reconciling art and science in psychiatry. Johns Hopkins University Press.
• Hodge, D. R. (2001). Spiritual assessment: A review of major qualitative methods and a new framework for assessing spirituality. Social Work, 46(3), 203–214. https://doi.org/10.1093/sw/46.3.203
• Sulmasy, D. P. (2002). A biopsychosocial-spiritual model for the care of patients at the end of life. The Gerontologist, 42(Suppl. 3), 24–33. https://doi.org/10.1093/geront/42.suppl_3.24
• World Health Organization. (2001). International classification of functioning, disability and health. World Health Organization.