Behavioral response to diazepam in a residential laboratory

Area of Science:

• Psychopharmacology
• Behavioral Neuroscience
• Clinical Psychology

Background:

• Diazepam is a commonly prescribed benzodiazepine anxiolytic.
• Its effects on complex social behaviors and naturalistic activities are not fully understood.
• Previous research often focuses on cognitive or motor task performance.

Purpose of the Study:

• To investigate the effects of clinically relevant diazepam doses on social behavior and performance in a residential setting.
• To compare diazepam's impact on ecologically valid behaviors versus traditional laboratory tasks.

Main Methods:

• Two groups of healthy adult males participated in 15-day residential studies.
• Diazepam (5 or 10 mg/70 kg) or placebo was administered orally twice daily in alternating three-day intervals.
• Behavioral observations included social interaction duration, verbal interaction, performance tasks, and caloric intake.

Main Results:

• Diazepam did not alter total social time but modulated verbal interaction (low dose increased, high dose decreased).
• Both doses impaired performance on a second-order repeated-acquisition task but not other performance measures.
• Caloric intake increased in most subjects, and subjective reports of 'potency' and 'sedation' increased with the high dose.

Conclusions:

• Clinically used doses of diazepam can influence naturalistic social behaviors and eating habits.
• These effects were observed despite no significant impact on most standard laboratory performance measures.
• Diazepam's ecological validity in real-world settings warrants further investigation beyond controlled task performance.