Decision making as a predictor of first ecstasy use: a prospective study

Area of Science:

• Neuroscience
• Psychology
• Psychopharmacology

Background:

• Ecstasy (3,4-methylenedioxymethamphetamine) use can harm the serotonin system and lead to neuropsychological deficits.
• Predictors for initiating ecstasy use are not well understood.
• While self-reported impulsivity doesn't predict ecstasy initiation, neuropsychological impulsivity indicators require further investigation.

Purpose of the Study:

• To test if neuropsychological impulsivity indicators predict the initiation of ecstasy use.
• To investigate the role of decision-making strategy and reaction times in predicting first-time ecstasy use.

Main Methods:

• The Iowa Gambling Task was used to assess decision-making strategy and reaction times in 149 ecstasy-naive individuals.
• Participants were followed for an average of 18 months to track ecstasy initiation.
• Performance was compared between those who initiated ecstasy use (n=59) and those who remained naive (n=90).

Main Results:

• Significant differences in decision-making strategy were observed between females who later used ecstasy and those who remained naive.
• Future ecstasy users exhibited a smaller difference in decision-making reaction times between advantageous and disadvantageous choices compared to persistent naive individuals.
• These findings were specific to female participants.

Conclusions:

• Decision-making strategy on a gambling task can predict future ecstasy use in women.
• Altered decision-making times in future users may indicate reduced sensitivity to punishment or heightened impulsivity.
• The small effect size suggests limited clinical relevance for these findings.