Assertion: ecstasy's effect | /r/CapableOf | confound by trait
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text: Conversely, our present findings appear congruent with several other recent studies suggesting that cognitive effects of ecstasy use are modest (16, 58) and perhaps mediated or confounded by trait impulsiveness (47), comorbid substance use (48), and sleep deprivation (48, 59)—although this last possibility remains uncertain (60).