title: A decision model for steady-state choice in concurrent chains.
abstract: Grace and McLean (2006) proposed a decision model for acquisition of choice in concurrent chains which assumes that after reinforcement in a terminal link, subjects make a discrimination whether the preceding reinforcer delay was short or long relative to a criterion. Their model was subsequently extended by Christensen and Grace (2008, 2009a, 2009b) to include effects of initial- and terminal-link duration on choice. We show that an expression for steady-state responding can be derived from the decision model, which enables a model for choice that provides an account of archival data that is equal or superior to the contextual choice model (Grace, 1994) and hyperbolic value-added model (Mazur, 2001) in terms of goodness of fit, parsimony, and parameter invariance. The success of the steady-state decision model validates the strategy of understanding acquisition phenomena as a bridge toward explaining choice at the molar level.
authors: University of Melbourne, Australia.
authors: Darren R
authors: DR
authors: Christensen
authors: Randolph C
authors: RC
authors: Grace
mesh_terms: D000818:Animals; D002755:Choice Behavior; D010856:Columbidae; D003216:Conditioning, Operant; D003657:Decision Making; D004193:Discrimination Learning; D008960:Models, Psychological; D012054:Reinforcement, Psychology; D013997:Time Factors