According to the diathesis-stress model person may inherit a predisposition for a psychological disorder but never exhibit the symptoms of that disorder.

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The diathesis-stress model suggests that while an individual may have a genetic or biological predisposition (diathesis) for a psychological disorder, the actual expression of symptoms requires an environmental stressor. Thus, a person may never exhibit symptoms if they do not encounter significant stressors.

According to the Diathesis-Stress Model Person May Inherit a Predisposition