Effects of variable and fixed second-order schedules on schedule-induced polydipsia in the rat.


Journal Article

Schedule-induced polydipsia was studied in rats on a variable second-order schedule in Experiments 1 and 2. Drinking occurred only following presentations of the pellet reinforcer and was not induced by a stimulus that was associated with pellet delivery. Moreover, it was shown that lever pressing for food was not competing with the opportunity to drink following the stimulus during non-reinforced intervals. In Experiment 3 a fixed second-order schedule was used, and only one animal drank following the presentation of the stimulus. A positive contrast effect was obtained with schedule-induced drinking in Experiments 1 and 2, and it was suggested that schedule-induced polydipsia shows behavioral interactions similar to those seen with food reinforced operants.

Full Text

Cited Authors

  • Porter, JH; Arazie, R; Holbrook, JW; Cheek, MS; Allen, JD

Published Date

  • February 1, 1975

Published In

Volume / Issue

  • 14 / 2

Start / End Page

  • 143 - 149

PubMed ID

  • 1161820

Pubmed Central ID

  • 1161820

Electronic International Standard Serial Number (EISSN)

  • 1873-507X

International Standard Serial Number (ISSN)

  • 0031-9384

Digital Object Identifier (DOI)

  • 10.1016/0031-9384(75)90158-4


  • eng