suggests that people with a predisposition for a disorder will develop the disorder when faced with stress
diathesis-stress model
The diathesis-stress model suggests that individuals have a genetic or pre-existing predisposition for a specific mental disorder, but they will only develop the disorder when exposed to significant stress. This model implies that two factors interact with each other, namely, a person’s vulnerability and stressful life events. Vulnerability may be attributed to genetic and/or environmental factors and can make an individual more prone to the development of psychological disorders. Stress, on the other hand, may be related to significant life events such as loss, trauma, or significant change.
For example, a person with a genetic predisposition to develop depression may only experience depressive symptoms following a significant life event such as the death of a loved one. In contrast, another person without a genetic vulnerability to depression may experience emotional distress in response to similar life events, but they are unlikely to develop depression.
The diathesis-stress model helps explain why some individuals with a family history of mental illness are not affected, while others are. Overall, this model highlights the critical role which both biological and environmental influences play in the development of mental disorders.
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