Individuals may have different predispositions to addiction, influencing their vulnerability to highly reinforcing substances and behaviors.

“for a long time you know people have talked about the quote unquote addictive personality oh I'm I have an addictive personality whatever I do I take it to the extreme I'm going to get addicted um you know that's a kind of colloquial use but it gets to the heart of this idea that yes people come into the world with different vulnerability to this tendency to take to the extreme the pursuit of certain types of Highly reinforcing substance and behaviors once discovered in the environment okay”