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School of Psychology

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College of Sciences

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Work Science Center

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Publication Search Results

Now showing 1 - 10 of 27

Functional analysis and treatment of human-directed undesirable behaviors in captive chimpanzees (Pan troglodytes)

(Georgia Institute of Technology, 2008-11-10) Martin, Allison L.

Functional analysis techniques traditionally used in the assessment of problem behaviors in humans were used to identify the reinforcing consequences for undesirable, human-directed behaviors such as feces throwing and spitting in two captive adult chimpanzees (Pan troglodytes). The first subject's problem behaviors were maintained by both positive and negative reinforcement contingencies, with rates being highest when the display of inappropriate behaviors resulted in access to social attention and juice. The implementation of a function-based treatment plan combining functional communication training with extinction resulted in a 90% reduction in the chimpanzee's inappropriate behaviors. No function was identified for the second subject's inappropriate behaviors. This project represents one of the first attempts to apply these function-based behavioral techniques to a non-human subject.
Spatial memory recall in the giant panda (ailuropoda melanoleuca)

(Georgia Institute of Technology, 2008-08-25) Perdue, Bonnie Marie

The giant panda (Ailuropoda melanoleuca) is an endangered species and many efforts are being made to ensure its survival, including numerous research studies. However, there has been little investigation of spatial memory in the giant panda. Spatial memory is an important mechanism for survival in the wild, allowing an animal to find and remember the location of food, mates, den sites and avoid predators. Memory assessment in non-human species typically involves the use of recognition, as opposed to recall tasks. The current study tested spatial memory recall in 1.1 giant pandas using a delayed response memory task. The design required a delayed response to a previously lighted location, with varying lengths of delay between the observation phase and the test phase. The male subject reached criterion at 2-, 3-, 4-, 5-, 6-, and 10-second delays. The female subject reached criterion at 2-, 3-, 4-, 5-, 6-, 10-, and 15-second delays. The results support the hypothesis that giant pandas have working memory recall ability for spatial location.
Food Choice, Reinforcer Preference, and Visual Discrimination in Monitor Lizards (Varanus Spp.)

(Georgia Institute of Technology, 2007-10-23) Gaalema, Diann Ellen

Learning in reptiles has been studied with a variety of methods and included numerous species. However, research on learning in lizards has generally focused on spatial memory and has used only a few species. No research has specifically investigated and documented the use of visual discrimination in monitor lizards. The ability of monitor lizards (Varanus spp.) to discriminate between visual stimuli was investigated. Subjects were tested on acquisition and two reversals of a discrimination task between black and white stimuli. A food-choice procedure was used to determine if consistent rankings of food items could be determined using a multiple-stimulus choice procedure. The functional value of the rankings was assessed using a progressive ratio technique. The subjects formed stable food preferences, which were reflected in increased response requirement completed for preferred items and subjects did successfully learn the initial discrimination task and the following reversals.
Habituation and Desensitization as Methods for Reducing Fearful Behavior in Singly-Housed Rhesus Macaques

(Georgia Institute of Technology, 2007-07-20) Clay, Andrea Wolstenholme

Operant conditioning using positive reinforcement techniques has been used extensively in the management of nonhuman primates in both zoological and laboratory settings. Based on a large body of previous research that demonstrates the utility of such techniques in reducing stress, abnormal behavior, and aggression, this research project was intended to develop and test the usefulness of habituation and counter-conditioning techniques in reducing the fear-responses of singly-housed male rhesus macaques living in the laboratory environment. Additionally, we investigated the variable of temperament as it relates to the reduction of fear-responsivity and overall training success. Based on a Wilcoxon Matched-Pairs Sign Test, we found that animals exposed to desensitization training were significantly likely to show a reduction in the rate at which they engaged in cringing toward humans (exact significance = .016, one-tailed, N ties = 6), cringing in general (exact significance = .016, one-tailed, N ties = 6), and in stress-related behaviors (exact significance = .016, one-tailed, N ties = 6). Animals exposed to basic husbandry training or exposed to no training at all were not significantly likely to show a reduction in the rates of these behaviors. When these same behaviors were analyzed in terms of duration of behavior, desensitization-exposed animals were significantly likely to show reduction in the amount of time spent cringing toward humans (exact significance = .016, one-tailed, N ties = 6), but not in cringing behaviors in general or in stress-related behaviors. Neither the husbandry-exposed group nor the group exposed to no training showed a significant number of subjects exhibiting a reduction in duration of any of these behaviors. Additionally, initial temperament assessments were found to significantly predict the relative ability of subjects exposed to training to acquire trained behaviors such that animals generally ranked as more inhibited in terms of temperament also ranked as slower learners based on a Wilcoxon Matched-Pairs Signed-Ranks test, z = -.316, p = .752 (two-tailed). Results of this study could enhance both laboratory animal welfare and laboratory animal research, and could be a first step in developing techniques for reducing fearful behavior in rhesus monkeys in the laboratory environment.
Fish Introduction to Jaguars (Panthera onca): Response of Zoo Visitors and Jaguars

(Georgia Institute of Technology, 2007-04-09) McDole, Erin

In this study, zoo visitor response to live prey feeding and jaguar response to dead fish feeding were analyzed. Four hundred visitors at Zoo Atlanta and four hundred visitors at Palm Beach Zoo were asked about their attitudes toward feeding live prey to zoo carnivores. Agreement rates were found to be high. Agreement rates at Zoo Atlanta and Palm Beach Zoo were both significantly higher for feeding live fish to penguins than at Edinburgh Zoo as reported in Ings et al. (1997). Zoo Atlanta also had a higher agreement rate for feeding live rabbits to cheetahs in view than Edinburgh Zoo. Both Zoo Atlanta and Palm Beach Zoo had lower agreement rates for feeding live insects to lizards out of view than Edinburgh Zoo. Agreement rates for visitors at Palm Beach Zoo that saw a dead fish to jaguar introduction did not differ significantly from visitors that had not seen the introduction. However, at both US Zoos, agreement rate was higher for visitors that had seen a live prey introduction at a zoo or aquarium in the past. Agreement rate was significantly greater for feeding live fish to jaguars, mice to hawks, and rabbits to cheetahs in view. For Palm Beach Zoo agreement rate was also higher for feeding live rabbits to cheetahs out of view. Stay time did not differ significantly between visitors at Palm Beach Zoo that saw and did not see a dead fish to jaguar introduction. Jaguar activity level, behavioral diversity, fecal corticoids, visibility, and percent time spent in water did not significantly differ between fish introduction and baseline.
The Effect of Early Rearing Experience on Adult Reproductive Behavior in Captive Giant Pandas and Spectacled Bears

(Georgia Institute of Technology, 2004-12-10) Sun, Pei

The present study examined the relationship between early rearing experience and reproductive competence in captive adult giant pandas (Ailuropoda melanoleuca) and spectacled bears (Tremarctos ornatus). Life history information of 52 giant pandas and 34 spectacled bears were obtained from the International Studbook and by interviewing staff at institutions housing the subjects. The early rearing experience variables included duration of mother rearing, social access within 1-yr period following maternal separation, and birth origin. Correlation, Chi-square, and logistic regression analyses were used to analyze the data. Contrary to findings from studies with other animals, the results generally suggest that early rearing experience is not related to adult reproductive success in giant pandas and spectacled bears. Alternative explanation and limitation of the study were discussed; suggestions were made for future study.
Post-Conflict Behavior in Captive Western Lowland Gorillas (Gorilla gorilla gorilla)

(Georgia Institute of Technology, 2004-12-06) Mallavarapu, Suma

Post-conflict behaviors, including reconciliation, redirected aggression, and consolation, have been observed in several primate and non-primate species. These behaviors are thought to help re-establish rates of affiliation and tolerance to baseline levels, by terminating the victims stress response, and reducing the social tension created by conflict. Post-conflict behavior was examined in two groups (N = 13) of captive western lowland gorillas, a species for which no previous conflict resolution data exist. The post-conflict/matched-control method was used to observe the groups at Zoo Atlanta. Analyses of 223 conflicts (using chi-square, Wilcoxon signed ranks, and Kolmogorov-Smirnov tests) showed significantly more affiliation between former opponents after a conflict when compared to control periods, indicating reconciliation. Results also showed significantly more affiliation between the victim and a third-party after a conflict, indicating consolation. Both solicited and unsolicited consolation were observed. Instances of redirected aggression were very few, and thus not included in the analyses. The majority of the affiliative interactions were social proximity, which suggests that unlike most nonhuman primates, proximity, rather than physical contact, may be the main mechanism for resolving conflicts in western lowland gorillas. Post-conflict behavior was not uniform throughout the groups, but rather varied according to dyad type (for instance, adult-adult, juvenile-juvenile, adult-juvenile, etc.). Effects of kinship and the intensity of aggression during a conflict on post-conflict behavioral patterns were analyzed.
Variation of Feeding Regimes: Effects on Giant Panda (Ailuropoda melanoleuca) Behavior

(Georgia Institute of Technology, 2004-12-03) Sandhaus, Estelle Ann

Giant pandas in captivity are typically fed discrete amounts of highly concentrated food on a fixed time schedule, in addition to limited amounts of fresh bamboo throughout the day. In response to informal observations that these animals engage in a number of undesirable behaviors just prior to the predictable feeding of concentrated meals, we examined the existing feeding regime at the Research Base of Giant Panda Breeding in Chengdu, Peoples Republic of China. We sought to determine whether undesirable behaviors were occurring more frequently before the delivery of meals than at other times of day and whether modified feeding regimes would result in a more species-appropriate activity budget overall. As predicted, female giant pandas spent significantly more time engaged in door-directed/human-oriented behavior, stereotypic behavior, and non-stereotypic locomotion in the 30-minute periods prior to the feeding of concentrated meals. When placed on a modified feeding schedule in which frequency of bamboo provisioning was increased (total amount was held constant), significant differences were not found between study phases for the above-mentioned behaviors of interest, though a visual trend towards a decline in stereotypic behavior during the experimental phase was noted. Male pandas, when placed on a less predictable feeding schedule, did not exhibit significant behavioral differences in behaviors of interest between experimental phases or observation periods. These findings may be attributable in part to the low power inherent in the small sample size. However, visual trends that may be indicative of feeding anticipatory activity (FAA) were apparent. It appears that giant pandas, like many other animal species cited in the literature, are sensitive to periodic feeding regimes, though it is less clear as to which regime modifications will prove most beneficial.
The effect of enrichment structures on the behavior of captive western lowland gorillas (gorill g. gorilla) and public perception

(Georgia Institute of Technology, 2004-06-01) Allard, Stephanie M.
Simple visual discrimination training of the giant panda (Ailuropoda melanoleuca)

(Georgia Institute of Technology, 2003-12-01) Kelling, Angela S.