Answer:
diathesis
Explanation:
Diathesis is someone's likelihood to develop a certain type of medical condition because of their genetics.
Diathesis is not a fact, yet. It just a psychological attempt that people mad to explain the weird/undesired condition that is displayed by the people near them .
This can be seen in thom's train of thought. He observe his daughter is aggressive and energetic. Without even having any fact, he assume that there is a chance his history with drugs influence his daughter behavior.