"Dual use of alcohol and cannabis among college students: A reinforcer pathologies approach." Correction to Reed et al. (2021).

Reports an error in "Dual use of alcohol and cannabis among college students: A reinforcer pathologies approach" by Gideon P. Naudé, Derek D. Reed, Tyler J. Thornton and Michael Amlung (, 2021[Aug], Vol 29[4], 407-417). In the original article, in the Method section under Principal Components Analyses, it reads "We used a loading of ≥ 4.0 ... " when it should read "≥ 0.40." The correct loading criterion is listed in the Table 3 note. Analyses were run using the correct criterion. In Table 3, the loading for BP1 under the alcohol amplitude factor is "-0.4" when it should be "-0.04." The online version of this article has been corrected. (The following abstract of the original article appeared in record 2020-25392-001). The reinforcer pathologies model proposes 2 behavioral economic constructs interact in addiction: operant demand and delay discounting. These constructs manifest as behavioral markers of addiction in the form of excessive reinforcer value and strong preference for immediate access and consumption of this reinforcer despite suboptimal long-term outcomes. The first aim of this investigation was to identify the degree to which delay discounting (of money and alcohol) and demand for alcohol differ between college student drinkers ( = 185) who do and do not co-use cannabis. As a second aim, we sought to replicate the 2-factor solution for alcohol and cannabis demand within a college sample. Results suggest dual users have significantly stronger Persistence and Amplitude for alcohol, demonstrate steeper delay discounting of alcoholic drinks, and are at greater risk for alcohol use disorder than individuals who drink yet do not use cannabis. These results provide further support for the reinforcer pathologies model and contribute to the literature on dual-substance use in the college population. (PsycInfo Database Record (c) 2022 APA, all rights reserved).