Syllogistic Reasoning Performance in MDMA (Ecstasy) Users.
Catharine Montgomery, John E. Fisk, Russell Newcombe, Michelle Wareing, Philip N. Murphy
Experimental and Clinical Psychopharmacology January 1, 2005 DOI: 10.1037/1064-1297.13.2.137 via OpenAlex
Summary
AI-generated from the abstractRecreational use of MDMA (Ecstasy) is linked to impairments in syllogistic reasoning, a form of logical deduction. In a study comparing 22 MDMA users (average age 21.36) with 26 non-users (average age 21.31), users performed significantly worse on reasoning tasks, even after accounting for other drug use. However, this deficit was no longer statistically significant when differences in working memory capacity were considered. The findings suggest that MDMA-related declines in working memory and executive function may underlie the observed reasoning difficulties.
Study at a glance
| Characteristics | Observational cohort Peer reviewed |
|---|---|
| Sample size | 48 |
| Population | MDMA users and nonuser controls |
| Topics | MDMA |
| Keywords | Syllogism Working memory Cognitive psychology |
| Citations | 22 |
| Key finding | MDMA users showed impaired syllogistic reasoning, but the effect was not significant after controlling for working memory span. |
Abstract
Previous research has demonstrated working memory and executive deficits in recreational users of MDMA (3,4-methylenedioxymethamphetamine; Ecstasy). In turn, both of these constructs have been implicated in syllogistic reasoning performance. Twenty-two MDMA users (mean age = 21.36) and 26 MDMA nonuser controls (mean age = 21.31) were tested on syllogisms of varying difficulty and on measures of working memory and executive functioning. MDMA users were significantly impaired in aspects of syllogistic reasoning, and the effect remained significant after the authors controlled for the use of other drugs. However, the MDMA-related variance was reduced to below statistical significance following control for group differences in working memory span. The results are consistent with the possibility that MDMA-related deficits in aspects of executive functioning result in impaired reasoning performance among MDMA users.