Package: beezdiscounting 0.4.0.9000

beezdiscounting: Behavioral Economic Easy Discounting

Facilitates some of the analyses performed in studies of behavioral economic discounting. The package supports scoring of the 21- and 27-Item Monetary Choice Questionnaires (see Kaplan et al., 2016; <doi:10.1007/s40614-016-0070-9>), scoring of the 30-Item Probability Discounting Questionnaire (see Madden et al., 2009; <doi:10.1037/a0016806>), calculating k values (Mazur's simple hyperbolic and exponential) using nonlinear regression, calculating various Area Under the Curve (AUC) measures, plotting regression curves for both fit-to-group and two-stage approaches, checking for unsystematic discounting (Johnson & Bickel, 2008; <doi:10.1037/1064-1297.16.3.264>) and scoring of the minute discounting task (see Koffarnus & Bickel, 2014; <doi:10.1037/a0035973>) using the Qualtrics 5-trial discounting template (see the Qualtrics Minute Discounting User Guide; <doi:10.13140/RG.2.2.26495.79527>), which is also available as a .qsf file in this package. The package also fits mixed-effects (hierarchical) discounting models with a scale-location-truncated beta likelihood that admits indifference points at exactly 0 and 1 (Kim, Kaplan, Koffarnus, and Franck, 2025; <arxiv:2509.13167>). The package also implements the linearized Mazur estimator, random-effects model, and F-test of Hinds et al. (2026; <doi:10.1016/j.jmp.2026.103006>).

Authors:Brent A. Kaplan [aut, cre, cph]