Psychopharmacology (2017) 234:2421–2429 DOI 10.1007/s00213-017-4633-6 ORIGINAL INVESTIGATION Latent factor structure of a behavioral economic marijuana demand curve 1 2,3,4 1,5,6 1,2,7 Elizabeth R. Aston & Samantha G. Farris & James MacKillop & Jane Metrik Received: 15 November 2016 /Accepted: 11 April 2017 /Published online: 16 May 2017 Springer-Verlag Berlin Heidelberg 2017 Abstract tors and marijuana use, past quit attempts, and marijuana Rationale Drug demand, or relative value, can be assessed via expectancies. analysis of behavioral economic purchase task performance. Results A two-factor solution was confirmed as the best Five demand indices are typically obtained from drug pur- fitting structure, accounting for 88.5% of the overall variance. chase tasks. Factor 1 (65.8% variance) reflected BPersistence,^ indicating Objectives The goal of this research was to determine whether sensitivity to escalating marijuana price, which comprised metrics of marijuana reinforcement from a marijuana purchase four MPT indices (elasticity, O , P , and breakpoint). max max task (MPT) exhibit a latent factor structure that efficiently Factor 2 (22.7% variance) reflected BAmplitude,^ indicating characterizes marijuana demand. the amount consumed at unrestricted price (intensity). Methods Participants were regular marijuana users (n =99; Persistence factor scores were associated with fewer past mar- 37.4% female, 71.5% marijuana
Psychopharmacology – Springer Journals
Published: May 16, 2017
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