In a within-subject placebo design, 10 heavy drinkers reporting alcoholic blackouts showed significant decrements in episodic memory when receiving alcohol but not on days when a placebo was given. Parallel deficits were observed on recall and recognition measures. On placebo days, self-ratings of intoxication were related to the degree of observed performance decrement. Memory deficits appear to be primarily pharmacologic rather than expectancy effects of drinking.
American Psychological Association
Miller, W.R., Hertel, P., Saucedo, C., & Hester, R.K. (1994). Effects of alcohol and expectancy upon episodic memory in individuals reporting alcoholic blackouts. Experimental and Clinical Psychopharmacology, 2(2), 161-166. doi: 10.1037/1064-12220.127.116.11
Experimental and Clinical Pyshcopharmacology