Sure you can. I'll give you a few links to look at. Obviously because these sites are free online they're not necessarily recognized as clinical references or the whole article is not available however, if you care to step into any university library you'll find more scientific references which will tell you the same things.
The first one I have here is from
Addiction at Allexperts
The medical community now makes a careful theoretical distinction between physical dependence (characterized by symptoms of withdrawal) and psychological dependence (or simply addiction). Addiction is now narrowly defined as "uncontrolled, compulsive use"; if there is no harm being suffered by, or damage done to, the patient or another party, then clinically it may be considered compulsive, but to the definition of some it is not categorized as "addiction". In practice, however, the two kinds of addiction are not always easy to distinguish. Addictions often have both physical and psychological components.
Another one
A general theory of addictions is proposed, using the compulsive gambler as the prototype. Addiction is defined as a dependent state acquired over time to relieve stress. Two interrelated sets of factors predispose persons to addictions: an abnormal physiological resting state, and childhood experiences producing a deep sense of inadequacy. All addictions are hypothesized to follow a similar three-stage course. A matrix strategy is outlined to collect similar information from different kinds of addicts and normals. The ultimate objective is to identify high risk youth and prevent the development of addictions.
One more
The concepts of dependence, addiction and abuse comprise overlapping clinical phenomena. The earlier anxiolytic drugs, in particular the barbiturates, were prone to abuse, i.e., non-medical use, and to high-dose misuse. Their modern counterparts, the benzodiazepines, are abused in a patchy way and are sometimes taken in regularly high doses. However, the main problem is physical dependence as manifested by a withdrawal syndrome on discontinuation of the drug. The withdrawal syndrome has been carefully described and comprises physical and psychological features.
The resources for these types of studies are not great online, but they're available if you care to do the research through more traditional means.