biopsychosocial model
A framework for understanding mental illness that integrates biological, psychological, and social factors as simultaneous, interacting contributors to a person's health.
Full Definition
The biopsychosocial model, introduced by George Engel in 1977, posits that no single domain—biological, psychological, or social—is sufficient on its own to explain the onset, course, or treatment of psychiatric illness. In community psychiatry documents, the term appears in assessments, treatment plans, and grant narratives to signal a holistic, non-reductionist clinical philosophy. Editors should be alert to incorrect spellings ('biopsychological' is not synonymous) and to the common omission of the hyphen in informal usage. When the model is referenced as a conceptual framework rather than a named entity, lowercase is standard. The related adjective form 'biopsychosocial' is always hyphenated in formal editorial style.
Usage
Usage note: Always hyphenate 'biopsychosocial' as an attributive adjective. Do not conflate with 'psychosocial,' which omits the biological domain.
In Context
- "The intake assessment was structured around a biopsychosocial model to capture environmental stressors alongside neurobiological risk factors." — Psychiatric intake assessment
- "Grant writers should ground the program rationale in biopsychosocial-model principles to align with NIMH funding priorities." — Grant proposal narrative