title: Reply to Pellón and Killeen's (2015) commentary on Boakes, Patterson, Kendig, and Harris (2015).
abstract: This reply notes the importance of data from variable-time schedules for resolving the issue of whether competition from magazine approach behavior is a major factor responsible for the concentration of schedule-induced drinking early in interpellet intervals. Pellón and Killeen propose that this temporal distribution of schedule-induced drinking reflects the effectiveness of adventitious reinforcement of this behavior over a delay, as detailed in their model. However, there is no evidence to support either of their key assumptions: (a) that schedule-induced behaviors are maintained by adventitious reinforcement ("are operants") and (b) that behaviors vary in their sensitivity to a delay before the subsequent occurrence of a reinforcer.
authors.affiliation: University of Sydney.
authors.forename: Robert A
authors.initials: RA
authors.lastname: Boakes
mesh_terms: D000818:Animals; D003216:Conditioning, Operant / Q000502:physiology*; D004327:Drinking Behavior / Q000502:physiology*; D008297:Male; D011597:Psychomotor Performance / Q000502:physiology*; D012055:Reinforcement Schedule; D012054:Reinforcement, Psychology