Abstract # 15:

Scheduled for Thursday, August 18, 2005 10:30 AM-10:45 AM: Session 2 (Mayfair Room) Oral Presentation

Dyadic and Triadic Post-Conflict Affiliation Among Captive Hamadryas Baboons (Papio hamadryas hamadryas) Includes Consolation to Victims

N. A. DeBolt Robertson1, P. G. Judge1,2 and K. M. Treier1
1Program in Animal Behavior, Bucknell University, Lewisburg, PA 17837, USA, 2Department of Psychology, Bucknell University
     Dyadic reconciliation occurs when former opponents engage in non-aggressive post-conflict contact. Interactions between third parties and the initiator or receiver of conflict may also occur (consolation). We examined post-conflict affiliation and latency to first contact between opponents and between combatants and third parties to determine if consolation occurred in a hamadryas baboon harem (N = 15). 549 post-conflict intervals and corresponding matched-control baseline intervals were collected. Combatants contacted opponents and third parties more often following conflict than during baseline (opponents: P < 0.01; third parties: P < 0.01; Wilcoxon signed-ranks tests). Average dyadic conciliatory tendency was 30.8%; triadic conciliatory tendency was significantly higher (58.2%; P < 0.01). However, conciliatory tendency between opponents was higher when combatants first contacted their opponent (80.7%) compared to when opponents made contact after first contacting a third party (16.7%; P < 0.01). Thus, combatants were less likely to reconcile with opponents after contacting a third party. When aggressors affiliated only with opponents, contact was sooner (Mean = 63.3s) than when affiliating only with third parties (Mean = 106.9s; P < 0.05). Victims’ contact latency did not differ between opponents (Mean = 82.2s) and third parties (Mean = 76.6s; P > 0.05). When both dyadic and triadic contact occurred, aggressors’ first contact was not different between opponents (Mean = 39.0s) and third parties (Mean = 38.4s; P > 0.05); however, victims contacted third parties sooner after conflict (Mean = 30.9s) than they contacted opponents (Mean = 52.9s; P < 0.05). Victims’ affiliation with third parties following aggression indicates the occurrence of consolation in this species.