Alcohol and Alcoholism Advance Access originally published online on October 11, 2004
Alcohol and Alcoholism 2004 39(6):509-513; doi:10.1093/alcalc/agh099
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Alcohol & Alcoholism Vol. 39, No. 6 © Medical Council on Alcohol 2004; all rights reserved
NEXT DAY EFFECTS OF A NORMAL NIGHT'S DRINKING ON MEMORY AND PSYCHOMOTOR PERFORMANCE
University of Ulster, Derry, Northern Ireland, UK
* Author to whom correspondence should be addressed at: Department of Mental Health, Queens University Belfast, Whitla Medical Building, 97 Lisburn Road, Belfast BT9 7BL, UK. Tel.:+(0)7718 919268; E-mail: adele.mckinney{at}qub.ac.uk
(Received 24 February 2004; first review notified 18 March 2004; in revised form 31 August 2004; accepted 2 September 2004)
Aim: To investigate in social drinkers the effects of a ‘normal’ evening of drinking alcohol on cognitive performance. Methods: Aiming for ecological validity, the study required participants to consume their usual quantity of any type of alcoholic beverage in their chosen company (hangover situation). However, the timing of drinking was restricted to the period between 22:00 and 02:00 hours on the night before testing. Testing included memory and psychomotor performance tests; testing was also performed after an evening of abstinence (no hangover situation), following a counterbalanced design using repeated measures, with time of testing (09:00, 11:00 and 13:00 hours) and order of testing (hangover/no hangover; no hangover/hangover) as ‘between participant’ factors in the analysis. Results: Forty-eight social drinkers (33 women, 15 men) aged between 18 and 43 years were tested, with a 1-week interval between test sessions. The morning after alcohol (mean consumption: 14.7 units for men; 10.4 units for women), free recall was impaired at 09:00 hours and delayed recognition and psychomotor performance were impaired throughout the morning, despite blood alcohol levels of zero or very near zero. Conclusion: Memory and psychomotor performance is impaired on the morning after heavy ‘social’ drinking.
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