title: The logistics of choice.
abstract: The generalized matching law (GML) is reconstructed as a logistic regression equation that privileges no particular value of the sensitivity parameter, a. That value will often approach 1 due to the feedback that drives switching that is intrinsic to most concurrent schedules. A model of that feedback reproduced some features of concurrent data. The GML is a law only in the strained sense that any equation that maps data is a law. The machine under the hood of matching is in all likelihood the very law that was displaced by the Matching Law. It is now time to return the Law of Effect to centrality in our science.
authors.affiliation: Arizona State University.
authors.forename: Peter R
authors.initials: PR
authors.lastname: Killeen
mesh_terms: D000818:Animals; D002755:Choice Behavior; D010856:Columbidae; D004192:Discrimination, Psychological; D000068156:Formative Feedback; D008960:Models, Psychological; D012055:Reinforcement Schedule; D012054:Reinforcement, Psychology
keywords: Hooke's Law; concurrent schedules; conditioned reinforcement; generalized matching; law of effect; logistic function; matching; negative feedback