title: Three-configuration matching-to-sample in the pigeon.
abstract: Pigeons were trained on a zero-delay matching-to-sample procedure during which only three of the four possible stimulus configurations were presented. Subsequently, all birds were exposed to all four configurations as a transfer test. A high degree of negative transfer from the three training configurations was obtained in Experiment 1. The results of Experiment 2 indicated that three-configuration training produced differential position-preference effects. During the transfer test, responding after one sample stimulus was apparently based on position, while responding after the other sample was based on color.
authors.forename: A C
authors.initials: AC
authors.lastname: Kamil
authors.forename: R A
authors.initials: RA
authors.lastname: Sacks