You searched for: “predisposition
predisposition (s) (noun), predispositions (pl)
A condition or state that suggests susceptibility or inclination towards something; such as, a mood or a health issue: Randy had a predisposition of developing a skin rash because of heat or overexposure to the sun as a child.

Based on Hope's childhood experiences, it would seem she has a predisposition to laughter and fun.

Brian had a latent predisposition to a disease which could be activated by stress.