What does the Diathesis-Stress model suggest about the development of psychopathology?

The Diathesis-Stress model suggests that the development of psychopathology is a result of the interaction between an individual's vulnerability, or predisposition, and external stressors. This model posits that a person may have a genetic or psychological predisposition (the diathesis) to develop a mental health disorder, but this predisposition alone does not guarantee that the disorder will manifest. Instead, it is the combination of this vulnerability with significant stressors—such as traumatic events, chronic stress, or life changes—that increases the likelihood of the disorder developing.

In practical terms, this means that individuals who have a higher vulnerability may require less external stress to trigger the onset of a psychological disorder, while those with lower vulnerability might withstand greater stress without developing one. This model is widely accepted for its comprehensive approach, recognizing that both biological factors and environmental influences play critical roles in mental health.

Therefore, the assertion that vulnerability combined with stress can lead to psychopathology encapsulates the essence of the Diathesis-Stress model, making it the correct choice.