“…Dopamine strengthens and reinforces the new connections that are being made in the brain while an activity is undertaken. This in turn acts to encourage the individual to repeat the activity again so they can feel that pleasure once more.”
I take this to mean any activity which releases dopamine could be considered “addictive” depending on one’s definition of the word. I guess it’s important to think about the results of the behavior in evaluating the “addiction”, whether it is learning, exercising, social conversations (typically considered good “addictions”) or drugs, pornography, etc (typically not good).
Kip on Character 