Abstract # 4308 Event # 102:

Scheduled for Friday, June 22, 2012 11:45 AM-12:00 PM: Session 15 (Camellia )


DISORGANIZED VERSUS ORGANIZED ATTACHMENT STYLES IN CAPTIVE LABORATORY-HOUSED CHIMPANZEES (PAN TROGLODYTES)

A. W. Clay1,2, K. A. Bard3, M. A. Bloomsmith1, T. L. Maple2, M. J. Marr2 and H. Rollins2
1Yerkes National Primate Research Center, Behavioral Management Unit, 954 Gatewood Dr, Atlanta, GA 30329, USA, 2Georgia Institute of Technology, 3University of Portsmouth
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     Between the years of 1987 and 1995, 46 nursery-raised chimpanzee infants were tested with the Strange Situation Procedure, which assessed attachment to their primary human caregiver. In 2011-2012, 22 of these chimpanzees were assessed by survey respondents, and 43 were assessed for health indicators to determine if differences based on attachment style at one year old had any long term effects. Adult chimpanzees that were disorganized in their attachment (DA) at one year of age exhibited significantly higher rates of abnormal behaviour compared to those with an organized attachment style (OA) at one year of age (U = 23.0, p = .042). For those subjects with a full 20 years (birth through age 20) of data available, DA chimpanzees experienced a significantly higher frequency of wounding (U = 2.0, p < .001) and of upper respiratory infection (U = 18.0, p = .010). DA chimpanzees were significantly more likely to be rated as unperceptive in social interactions as compared to non-disorganized individuals (U = 21.5, p = .031). These results support the findings of human attachment research and attachment-based predictions for chimpanzees, such that an early history of disorganized attachment may have long lasting effects.