Next Article in Journal
Narrowing Perceptual Sensitivity to the Native Language in Infancy: Exogenous Influences on Developmental Timing
Previous Article in Journal
Response to Hypothetical Social Scenarios in Individuals with Traumatic Brain Injury Who Present Inappropriate Social Behavior: A Preliminary Report
Article Menu

Export Article

Open AccessArticle
Behav. Sci. 2013, 3(1), 99-119; doi:10.3390/bs3010099

Long-Term Evaluation of Abnormal Behavior in Adult Ex-laboratory Chimpanzees (Pan troglodytes) Following Re-socialization

1
Institute of Zoology, Karl-Franzens-University of Graz, Universitaetsplatz 2, 8010 Graz, Austria
2
Competence Center Apes, Four Paws, Linke Wienzeile 236, 1150 Vienna, Austria
*
Author to whom correspondence should be addressed.
Received: 31 December 2012 / Revised: 20 January 2013 / Accepted: 23 January 2013 / Published: 31 January 2013
View Full-Text   |   Download PDF [245 KB, uploaded 31 January 2013]   |  

Abstract

Adverse rearing conditions are considered a major factor in the development of abnormal behavior. We investigated the overall levels, the prevalence and the diversity of abnormal behavior of 18 adult former laboratory chimpanzees, who spent about 20 years single caged, over a two-year period following re-socialization. According to the onset of deprivation, the individuals were classified as early deprived (EDs, mean: 1.2 years) or late deprived (LDs, mean: 3.6 years). The results are based on 187.5 hours of scan sampling distributed over three sample periods: subsequent to re-socialization and during the first and second year of group-living. While the overall levels and the diversity of abnormal behavior remained stable over time in this study population, the amplifying effects of age at onset of deprivation became apparent as the overall levels of abnormal behavior of EDs were far above those of LDs in the first and second year of group-living, but not immediately after re-socialization. The most prevalent abnormal behaviors, including eating disorders and self-directed behaviors, however, varied in their occurrence within subjects across the periods. Most important, the significance of social companionship became obvious as the most severe forms of abnormal behavior, such as dissociative and self-injurious behaviors declined. View Full-Text
Keywords: chimpanzees; abnormal behavior; social deprivation; re-socialization chimpanzees; abnormal behavior; social deprivation; re-socialization
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Kalcher-Sommersguter, E.; Franz-Schaider, C.; Preuschoft, S.; Crailsheim, K. Long-Term Evaluation of Abnormal Behavior in Adult Ex-laboratory Chimpanzees (Pan troglodytes) Following Re-socialization. Behav. Sci. 2013, 3, 99-119.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Behav. Sci. EISSN 2076-328X Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top