Abnormal Psychology
Biological variables or factors play a very important role in determining abnormal behavior, which can be viewed from two angles. On the one hand, they can be seen as the main etiological reasons, much like when a disorder's etiology has a significant hereditary component. On the other hand, they can also be seen as an organismic variable (i.e., individual differences) that interacts with the environment to influence the symptom of choice.
