Effects of alcohol intoxication at .05 and .10 breath alcohol concentr
ation upon a number of validated indicators of managerial performance
were investigated in a double-blind crossover placebo-controlled simul
ation design. Managers (N = 48) spent 2 days handling quasi-experiment
al (partially event-controlled) tasks that permitted realistic manager
ial decision making under both ''normal'' and ''emergency'' conditions
. The data showed that speed and frequency of managerial action were a
ffected by alcohol at the .10 but not the .05 level. Strategy and plan
ning deteriorated at both levels. Limited improvement of performance w
as observed for one simpler component of managerial functioning at the
lower intoxication level, possibly due to myopia and/or a motivated '
'strain'' toward better performance induced by the perception of impai
rment.