People with psychological disorders may inherit a predisposition to developing behavioral disturbances. this provides evidence that factors contribute to many of the prevalent abnormalities.

People with psychological disorders may inherit a predisposition to developing behavioral disturbances. This provides evidence that biological factors contribute to many of the prevalent abnormalities.

Explanation:

This is part of the eternal debate of nurture vs nature. However, there are people that have prevalent conditions inherited so in those people the biological factor is something that stands out.

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