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Published on: March 17, 2019
Inattention, impulsive action, and subjective response to D-amphetamine
Jessica Weafer1, Harriet de Wit
1Department of Psychiatry and Behavioral Neuroscience, University of Chicago, 5841 S. Maryland Avenue, Chicago, IL 60637, United States.
Impulsive action, not inattention, predicts greater subjective response to amphetamine. This heightened sensitivity may increase stimulant abuse risk in impulsive individuals.
Area of Science:
- Neuroscience
- Psychology
- Addiction Research
Background:
- Impulsivity and sensitivity to drug rewards are known risk factors for drug abuse.
- Limited human data exists on how specific impulsivity components relate to acute drug effects.
Purpose of the Study:
- To investigate if inattention and impulsive action predict subjective responses to amphetamine in healthy adults.
Main Methods:
- 165 healthy adults completed behavioral tasks assessing inattention (attention lapses) and impulsive action (stop RT).
- Participants rated subjective responses to various amphetamine doses (0-20 mg) using the Drug Effects Questionnaire (DEQ) and Profile of Mood States (POMS).
Main Results:
- Inattention was negatively associated with subjective amphetamine response (DEQ).
- Impulsive action (stop RT) was positively associated with subjective responses on both DEQ and POMS.
- These associations strengthened with higher amphetamine doses, indicating a dose-response effect.
Conclusions:
- Inattention is linked to reduced subjective amphetamine effects.
- Heightened sensitivity to stimulant reward in individuals with high impulsive action may contribute to increased stimulant abuse risk.
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