Abstract

Abstract: Background: Laboratory research suggests that alcohol, marijuana, cocaine and MDMA influence the processing of time. Anecdotal reports of recreational drug use also often include descriptions of changes in the speed of the passage of time. Despite this, little is known about how and why recreational drug use influences the passage of time. Aim: To examine retrospective self-reports of the passage of time during a previous instance of alcohol, cannabis, cocaine or MDMA use. To establish the effect of substance use frequency, substance dose, anxiety, depression and stress on the passage of time. Methods: Using an online questionnaire, passage of time judgments were collected for the current day as well as recent instances of alcohol, cocaine, marijuana or MDMA use. Measures of affect, typical substance use frequency and substance use amount were taken. Results: Time was remembered as passing significantly more quickly than normal during alcohol, cocaine and MDMA use. Marijuana was associated with time passing more slowly than normal. Regression analysis revealed that drug induced distortions to the passage of time use were not predicted by drug use frequency, dose, depression, anxiety or stress. Furthermore, comparison of recreational drug users and non-users did not indicate any long-term effects of drug use on the passage of time. Conclusions: The results suggest that whilst distortions to the passage of time are a common feature of drug use, their causes are complex.

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