Chunk #5 — Method — Design and Procedure

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Evaluation of genetic variability in the dopamine receptor D2 in relation to behavioral inhibition and impulsivity/sensation seeking: an exploratory study with d-amphetamine in healthy participants.

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At the end of each session, participants also completed an end-of-session questionnaire reporting on their overall experience with the drug they received. After completing all four sessions, participants were debriefed and paid a total of $120.