Single dose testosterone administration increases impulsivity in the intertemporal choice task among healthy males

Area of Science:

• Neuroendocrinology
• Behavioral Economics
• Psychopharmacology

Background:

• Testosterone is linked to impulsive behavior.
• Understanding testosterone's influence on decision-making is crucial.

Purpose of the Study:

• To investigate the effect of exogenous testosterone on impulsivity.
• To examine how testosterone impacts intertemporal choice behavior.

Main Methods:

• 111 healthy young males participated in a double-blind, placebo-controlled study.
• Participants received a single 150 mg dose of testosterone gel or placebo.
• Impulsivity was assessed using an intertemporal choice task 180 minutes post-administration.

Main Results:

• Testosterone administration led to increased impulsive choices.
• Both model-free (higher indifference point) and model-based (steeper discounting) analyses supported this finding.
• Exogenous testosterone significantly altered decision-making towards immediate gratification.

Conclusions:

• Exogenous testosterone administration increases impulsivity in healthy young males.
• Testosterone's effects on decision-making are evident in laboratory-based intertemporal choice tasks.
• Findings support the role of testosterone in modulating impulsive behavior.