John has inherited a personality trait that makes him more likely to keep to himself than to socialize. as a result, he does not have many friends and spends a lot of time alone. if john were to develop depression, the model that would probably best explain the cause of his depression is the model.

reciprocal gene-environment model.

Explanation:

Based on the information provided within the question it can be said that the model that would best explain the cause of his depression is the reciprocal gene-environment model. This model states that "individuals with a genetic disposition tend to create environmental risk factors that promote disorders." Which is the case with John, since he inherited a introvert personality trait.

i dont know this man

answer; (trauma);