Abstract
Responses of mother rats were observed 24 h before and 24 and 72 h after exposure to one of three 8-day postpartum treatments: shock escape training, yoked inescapable shock, or restrained with no shock. In contrast to those in the other two groups, the dams given inescapable shock showed slower speed to approach the nest, shorter durations of being on the nest, and lower frequency and shorter total duration of oral contact with their pups. These dams also retrieved their pups less frequently, but this measure, as well as the frequency of leaving the nest, did not result in significant differences between groups. Since the traditional interpretations of the learned-helplessness effect were not entirely able to account for these findings, the observed uncontrollable-stress-produced changes in maternal behavior were examined from an ethological perspective.
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This research was supported by a USPHS Research Grant, 1R03MH38528-01, to the author.
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Williams, J.L. Influence of postpartum shock controllability on subsequent maternal behavior in rats. Animal Learning & Behavior 12, 209–216 (1984). https://doi.org/10.3758/BF03213144
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DOI: https://doi.org/10.3758/BF03213144