title: Prefeeding, Discontinuance of Prefeeding, and Force-Proportional Reinforcement.
authors.affiliation: a Department of Psychology , Princeton University , USA.
authors.forename: Ross D L
authors.initials: RD
authors.lastname: Filion
authors.affiliation: b University of Pennsylvania Medical School , Department of Psychiatry , USA.
authors.forename: Stephen C
authors.initials: SC
authors.lastname: Fowler
authors.affiliation: c Department of Psychology , Green Hall, Princeton University Princeton , New Jersey , 08540 , USA.
authors.forename: J M
authors.initials: JM
authors.lastname: Notterman