title: The opportunity cost model: automaticity, individual differences, and self-control resources.
abstract: I contend that Kurzban et al.'s model is silent on three issues. First, the extent to which opportunity-cost computations are automatic or deliberative is unclear. Second, the role of individual differences in biasing opportunity-cost computations needs elucidating. Third, in the absence of "next-best" tasks, task persistence will be indefinite, which seems unfeasible, so perhaps integration with a limited-resource account is necessary.
authors.affiliation: School of Psychology and Speech Pathology, Curtin University, Perth, Western Australia 6845, Australia. martin.hagger@curtin.edu.au www.martinhagger.com.
authors.forename: Martin S
authors.initials: MS
authors.lastname: Hagger
mesh_terms: D006801:Humans; D005222:Mental Fatigue / Q000523:psychology*; D008960:Models, Psychological