Since Ben believes he inherited a genetic predisposition to develop a depressive disorder, a biopsychosocial psychologist would consider Ben's genetic profile a diathesis.
The diathesis-stress model is a theory that explains the development of mental disorders, such as depressive disorder, from genetic or biological predisposition.
Diathesis occurs from the combination of stressful factors experienced by the individual, which can be a facilitating cause for the development of the mental disorder.
Therefore, diathesis is the individual's genetic or biological predisposition to develop a mental disorder influenced by psychosocial vulnerability and internal and external experiences that can cause some kind of stress.
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