The increased presence of fentanyl in cocaine has drastically increased cocaine-related overdoses, yet there is no research quantifying how cocaine users respond to fentanyl adulteration. In this online study, a modification of a behavioral economics measure, the Cocaine Purchase Task, will quantify for the first time how cocaine users respond to fentanyl contamination in cocaine. This study aims to 1) Determine how possible fentanyl adulteration affects cocaine demand, and 2) Determine which individual characteristics moderate the relationship between fentanyl adulteration and cocaine demand. Determining how possible fentanyl adulteration affects cocaine demand can help inform the development of effective harm reduction interventions for people who use cocaine to address the worsening crisis of opioid related deaths.
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