Influence of diazepam on prospective time estimation.

24 students, after intake of diazepam or placebo, performed a psychomotor test of finger tapping as a prospective time-estimation task. The task was less overestimated by those who were under the influence of the drug than by the 12 subjects to whom the placebo was given.

Cognition and vigilance: differential effects of diazepam and buspirone on memory and psychomotor performance.

Effects of a single dose of the anxiolytic buspirone (15 mg) on memory and psychomotor performance were studied in healthy volunteers and compared to those of the classic benzodiazepine anxiolytic diazepam (15 mg). The study was performed in a double-blind, placebo-controlled way. Three groups of 12 subjects were exposed to an extended test battery before and after intake of drug or placebo.

Prospective and retrospective time estimation.

30 students, when performing a task that required listening to 19 sentences for 150 sec., overestimated the duration of the task less in the prospective condition than in the retrospective one (46 sec. vs 85 sec.