Chunk #10 — Method — Dependent Measures — The ZKPQ (Zuckerman et al., 1993)

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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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The ZKPQ is a 99-item scale comprising the following subscales: Impulsive/Sensation Seeking (19 items), Neuroticism–Anxiety (19 items), Aggression–Hostility (17 items), Activity (17 items), Sociability (17 items), and Infrequency (10 items). We only evaluated the Impulsive/Sensation Seeking sub-scale of the ZKPQ in this analysis because the primary aim was to examine DRD2 genotype in relation to impulsivity.