Social Zeitgebers: A Peer Separation Model of Depression in Rats

  • Cindy L. Ehlers
  • Tamara L. Wall
  • Stephan P. Wyss
  • R. Ian Chaplin


The concept that loss and/or separation might play a pivotal role in the generation of a depressive episode has been a key point in several theories seeking to explain the etiology of affective disorder. Freud’s initial hypothesis suggested that a fixation (i.e., an arresting of psychological growth) at a highly dependent phase of development rendered a person much more vulnerable to the development of depression following a real or imagined loss in adult life (Freud, 1917). Elaborations of Freud’s theory have broadened the concept of loss to include experiences of separation and social rejection.


Affective Disorder Maternal Separation Biological Rhythm Group House Affective Illness 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Birkhäuser Boston 1989

Authors and Affiliations

  • Cindy L. Ehlers
  • Tamara L. Wall
  • Stephan P. Wyss
  • R. Ian Chaplin

There are no affiliations available

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