I find it interesting that the study asked about being athletic (positive), attractive (positive), and unpopular (negative). Anecdotally the people I knew (at the time) who were drinking in middle school didn't fit into any of those boxes and actually I wouldnt have called attractive, unattractive, athletic, unathletic, popular, or unpopular. I do wonder if they had asked about a different set of three (or all six) dimensions whether the result would have changed.