Previous observational studies, undertaken in artificial settings, have found differences in the drink preference, sip size and rate ofingestionfor alcoholics when compared to social drinkers. In this study data was collected blind from eleven alcoholics and eleven normal drinkers who were consuming their alcohol in a Clydeside bar. The subjects were unaware of their being observed. The previously found differences were not apparertt in this study, and this disagreement questions the validity of using certain specific drinking behaviours as targets for the modification of alcoholics' drinking style.