Records |
Author |
Momozawa, Y.; Takeuchi, Y.; Tozaki, T.; Kikusui, T.; Hasegawa, T.; Raudsepp, T.; Chowdhary, B.P.; Kusunose, R.; Mori, Y. |
Title |
SNP detection and radiation hybrid mapping in horses of nine candidate genes for temperament |
Type |
Journal Article |
Year |
2007 |
Publication |
Animal Genetics |
Abbreviated Journal |
Anim Genet |
Volume |
38 |
Issue |
1 |
Pages |
81-83 |
Keywords |
Animals; *Behavior, Animal; Breeding; Horses/*genetics/physiology; *Polymorphism, Single Nucleotide; Radiation Hybrid Mapping; *Temperament |
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Address |
Laboratory of Veterinary Ethology, The University of Tokyo, Tokyo 113-8657, Japan |
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0268-9146 |
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Notes |
PMID:17257195 |
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no |
Call Number |
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Serial |
1834 |
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Author |
Aureli, F.; de Waal, F.B. |
Title |
Inhibition of social behavior in chimpanzees under high-density conditions |
Type |
Journal Article |
Year |
1997 |
Publication |
American journal of primatology |
Abbreviated Journal |
Am. J. Primatol. |
Volume |
41 |
Issue |
3 |
Pages |
213-228 |
Keywords |
Aggression/*psychology; Animals; *Behavior, Animal; *Crowding; Female; Male; Pan troglodytes/*psychology; Population Density; *Social Environment; Stress, Psychological |
Abstract |
This is the first study to investigate the short-term effects of high population density on captive chimpanzees (Pan troglodytes). Subjects of the study were 45 chimpanzees living in five different groups at the Yerkes Regional Primate Research Center. The groups were observed under two conditions: 1) when they had access to both the indoor and outdoor sections of their enclosures; 2) during cold days when they were locked into the indoor runs, which reduced the available space by more than half. Under the high-density condition, allogrooming and submissive greetings decreased, but juvenile play increased. Remarkably, the rate of various forms of agonistic behavior, such as aggression, bluff charge, bluff display, and hooting, occurred less frequently under the high-density condition. This general decrease in adult social activity, including agonistic behavior, can be interpreted as an inhibition strategy to reduce opportunities for conflict when interindividual distances are reduced. This strategy is probably effective only in the short run, however. Behavioral indicators of anxiety, such as rough scratching and yawning, showed elevated rates, suggesting increased social tension under the high-density condition. |
Address |
Yerkes Regional Primate Research Center, Emory University, Atlanta, GA 30322, USA |
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English |
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Series Issue |
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Edition |
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ISSN |
0275-2565 |
ISBN |
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Notes |
PMID:9057966 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
203 |
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Author |
Koski, S.E.; Koops, K.; Sterck, E.H.M. |
Title |
Reconciliation, relationship quality, and postconflict anxiety: testing the integrated hypothesis in captive chimpanzees |
Type |
Journal Article |
Year |
2007 |
Publication |
American journal of primatology |
Abbreviated Journal |
Am. J. Primatol. |
Volume |
69 |
Issue |
2 |
Pages |
158-172 |
Keywords |
Animals; *Anxiety; *Behavior, Animal; Conflict (Psychology); Female; Male; Pan troglodytes/*psychology; *Social Behavior |
Abstract |
Reconciliation is a conflict resolution mechanism that is common to many gregarious species with individualized societies. Reconciliation repairs the damaged relationship between the opponents and decreases postconflict (PC) anxiety. The “integrated hypothesis” links the quality of the opponents' relationship to PC anxiety, since it proposes that conflicts among partners with high relationship quality will yield high levels of PC anxiety, which in turn will lead to an increased likelihood of reconciliation. We tested the integrated hypothesis in captive chimpanzees (Pan troglodytes) in the Arnhem Zoo, The Netherlands. We applied the standard PC/matched control (MC) method. Our results mostly support the integrated hypothesis, in that more valuable and compatible partners (i.e., males and frequent groomers) reconciled more often than less valuable and weakly compatible partners (i.e., females and infrequent groomers). In addition, PC anxiety was higher after conflicts among males than among females. Emotional arousal thus appears to be a mediator facilitating reconciliation. However, in contrast to the predictions derived from the integrated hypothesis, PC anxiety appeared only in aggressees, and not in aggressors, of conflicts. This suggests that while relationship quality determines PC anxiety, it is dependent on the role of the participants in the conflict. |
Address |
Department of Behavioural Biology, Utrecht University, The Netherlands. s.e.koski@bio.uu.nl |
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0275-2565 |
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Notes |
PMID:17146788 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
2872 |
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Author |
Mallavarapu, S.; Stoinski, T.S.; Bloomsmith, M.A.; Maple, T.L. |
Title |
Postconflict behavior in captive western lowland gorillas (Gorilla gorilla gorilla) |
Type |
Journal Article |
Year |
2006 |
Publication |
American journal of primatology |
Abbreviated Journal |
Am. J. Primatol. |
Volume |
68 |
Issue |
8 |
Pages |
789-801 |
Keywords |
Animals; *Behavior, Animal; *Competitive Behavior; Conflict (Psychology); Female; Gorilla gorilla/*physiology/psychology; Male; Time Factors |
Abstract |
Postconflict (PC) behaviors, including reconciliation and consolation, have been observed in many primate and several nonprimate species. Using the PC-matched control (MC) method, PC behavior was examined in two groups (n=13) of captive western lowland gorillas, a species for which no conflict resolution data have been published. Analyses of 223 conflicts 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. The majority of the affiliative interactions observed for both reconciliation and consolation 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. PC behavior was not uniform throughout the groups, but rather varied according to dyad type. |
Address |
Zoo Atlanta, Atlanta, Georgia 30315, USA. smallavarapu@zooatlanta.org |
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0275-2565 |
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Notes |
PMID:16847973 |
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no |
Call Number |
refbase @ user @ |
Serial |
2873 |
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Author |
Capitanio, J.P.; Widaman, K.F. |
Title |
Confirmatory factor analysis of personality structure in adult male rhesus monkeys (Macaca mulatta) |
Type |
Journal Article |
Year |
2005 |
Publication |
American journal of primatology |
Abbreviated Journal |
Am. J. Primatol. |
Volume |
65 |
Issue |
3 |
Pages |
289-294 |
Keywords |
Animals; *Behavior, Animal; Macaca mulatta/*psychology; Male; *Personality; Psychometrics; Social Behavior |
Abstract |
Reports from different laboratories have suggested that nonhuman primates have somewhat similar dimensions of personality. To date, however, no attempts have been made to statistically replicate a specific factor structure. In the present report, two independent observers recorded the behavior of 58 adult male rhesus monkeys, and then rated the animals with the use of a 50-item personality instrument. A confirmatory factor analysis (CFA) of the ratings resulted in the replication of a previously described four-factor personality structure [Maninger et al., American Journal of Primatology 61:73-83, 2003]. The first two dimensions-Sociability and Confidence-showed strong loadings and are similar to Affiliation and Agency dimensions in humans. The remaining dimensions-Equability and Irritability-were less clear, and it is possible that additional traits will have to be identified before a more robust structure can be established for these dimensions. |
Address |
Department of Psychology, University of California-Davis, Davis, California 95616, USA. jpcapitanio@ucdavis.edu |
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0275-2565 |
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Notes |
PMID:15772988 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
4111 |
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Author |
Capitanio, J.P. |
Title |
Personality dimensions in adult male rhesus macaques: prediction of behaviors across time and situation |
Type |
Journal Article |
Year |
1999 |
Publication |
American journal of primatology |
Abbreviated Journal |
Am. J. Primatol. |
Volume |
47 |
Issue |
4 |
Pages |
299-320 |
Keywords |
Animals; *Behavior, Animal; Forecasting; Macaca mulatta/*psychology; Male; *Personality; Psychometrics; Social Behavior |
Abstract |
The idea that consistencies in behavior exist over time and across situations underlies human personality research. Although several studies have examined personality in nonhuman primates, there are very few data showing the predictive power of personality factors. The goal of the present study was to determine whether personality dimensions, identified in adult male rhesus monkeys living in half-acre cages, predicted behavior in situations different from the one from which the dimensions were originally derived and at time points of up to 4.5 years after the original assessments. Four personality dimensions (Sociability, Confidence, Excitability, and Equability) were identified using psychometric procedures and were correlated with behaviors recorded in several situations: the animals' natal groups, during tests of behavioral responsiveness while in individual cages, in small stable and unstable social groups, while viewing stimulus videotapes, and during stable social dyads. Results indicated substantial predictability. Sociability reflected a greater tendency to engage in affiliative interactions. Confidence correlated with more aggressive behaviors and with behaviors that suggest less attractiveness. Animals high in Excitability were somewhat inconsistent in their social behavior, perhaps reflecting hyper-responsiveness to novel circumstances and thwarted opportunities for escape. Equability appeared to be related to a less aggressive, more passive, style of interaction. Excitability and Equability appear to reflect more stylistic components of social behavior, whereas Sociability and Confidence may be more content-based dimensions. Sociability was strongly related to size of kin network in the animals' natal groups, suggesting an important role for ontogeny in this dimension. These data suggest that a limited number of personality dimensions exist in adult male rhesus macaques, and that these dimensions have predictive power that is both long-term and cross situational. |
Address |
Department of Psychology and California Regional Primate Research Center, University of California, Davis 95616, USA. jpcapitanio@ucdavis.edu |
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0275-2565 |
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Notes |
PMID:10206208 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
4116 |
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Author |
Zentall, T.R. |
Title |
Mental time travel in animals: a challenging question |
Type |
Journal Article |
Year |
2006 |
Publication |
Behavioural processes |
Abbreviated Journal |
Behav. Process. |
Volume |
72 |
Issue |
2 |
Pages |
173-183 |
Keywords |
Animals; *Behavior, Animal; Columbidae; Concept Formation; Conditioning, Operant; *Imagination; *Memory; Mental Recall; Planning Techniques; Rats; *Time Perception; Transfer (Psychology) |
Abstract |
Humans have the ability to mentally recreate past events (using episodic memory) and imagine future events (by planning). The best evidence for such mental time travel is personal and thus subjective. For this reason, it is particularly difficult to study such behavior in animals. There is some indirect evidence, however, that animals have both episodic memory and the ability to plan for the future. When unexpectedly asked to do so, animals can report about their recent past experiences (episodic memory) and they also appear to be able to use the anticipation of a future event as the basis for a present action (planning). Thus, the ability to imagine past and future events may not be uniquely human. |
Address |
Department of Psychology, University of Kentucky, Lexington, KY 40506-0044, USA. zentall@uky.edu |
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English |
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0376-6357 |
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Notes |
PMID:16466863 |
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no |
Call Number |
refbase @ user @ |
Serial |
218 |
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Author |
Zentall, T.R. |
Title |
Selective and divided attention in animals |
Type |
Journal Article |
Year |
2005 |
Publication |
Behavioural processes |
Abbreviated Journal |
Behav. Process. |
Volume |
69 |
Issue |
1 |
Pages |
1-15 |
Keywords |
Animals; *Attention; *Behavior, Animal; *Discrimination (Psychology); *Field Dependence-Independence; *Psychological Theory |
Abstract |
This article reviews some of the research on attentional processes in animals. In the traditional approach to selective attention, it is proposed that in addition to specific response attachments, animals also learn something about the dimension along which the stimuli fall (e.g., hue, brightness, or line orientation). More recently, there has been an attempt to find animal analogs to methodologies originally applied to research with humans. One line of research has been directed to the question of whether animals can locate a target among distracters faster if they are prepared for the presentation of the target (search image and priming). In the study of search image, the target is typically a food item and the cue consists of previous trials on which the same target is presented. In research on priming effects, the cue is typically different from the target but is a good predictor of its occurrence. The study of preattentive processes shows that perceptually, certain stimuli stand out from distracters better than others, depending not only on characteristics of the target relative to the distracters, but also on relations among the distracters. Research on divided attention is examined with the goal of determining whether an animal can process two elements of a compound sample with the same efficiency as one. Taken together, the reviewed research indicates that animals are capable of centrally (not just peripherally) attending to selective aspects of a stimulus display. |
Address |
Department of Psychology, University of Kentucky, 202B Kastle Hall, Lexington, KY 40506-0044, USA. Zentall@uky.edu |
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0376-6357 |
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PMID:15795066 |
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no |
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refbase @ user @ |
Serial |
224 |
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Author |
Friedrich, A.M.; Zentall, T.R. |
Title |
Pigeons shift their preference toward locations of food that take more effort to obtain |
Type |
Journal Article |
Year |
2004 |
Publication |
Behavioural processes |
Abbreviated Journal |
Behav. Process. |
Volume |
67 |
Issue |
3 |
Pages |
405-415 |
Keywords |
Animals; *Behavior, Animal; *Choice Behavior; Columbidae; *Exertion; *Feeding Behavior; Reward |
Abstract |
Although animals typically prefer to exert less effort rather than more effort to obtain food, the present research shows that requiring greater effort to obtain food at a particular location appears to increase the value of that location. In Experiment 1, pigeons' initial preference for one feeder was significantly reduced by requiring 1 peck to obtain food from that feeder and requiring 30 pecks to obtain food from the other feeder. In Experiment 2, a similar decrease in preference was not found when pigeons received reinforcement from both feeders independently of the amount of effort required. These results are consistent with the within-trial contrast effect proposed by in which the relative hedonic value of a reward depends on the state of the animal immediately prior to the reward. The greater the improvement from that prior state the greater the value of the reinforcer. |
Address |
Department of Psychology, University of Kentucky, Lexington, KY 40506-0044, USA |
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0376-6357 |
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PMID:15518990 |
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no |
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refbase @ user @ |
Serial |
227 |
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Author |
Friedrich, A.M.; Clement, T.S.; Zentall, T.R. |
Title |
Functional equivalence in pigeons involving a four-member class |
Type |
Journal Article |
Year |
2004 |
Publication |
Behavioural processes |
Abbreviated Journal |
Behav. Process. |
Volume |
67 |
Issue |
3 |
Pages |
395-403 |
Keywords |
Animals; *Association Learning; *Behavior, Animal; *Cognition; Columbidae; *Concept Formation |
Abstract |
Research suggests that animals are capable of forming functional equivalence relations or stimulus classes of the kind usually demonstrated by humans (e.g., the class defined by an object and the word for that object). In pigeons, such functional equivalences are typically established using many-to-one matching-to-sample in which two samples are associated with one comparison stimulus and two different samples are associated with the other. Evidence for the establishment of functional equivalences between samples associated with the same comparison comes from transfer tests. In Experiment 1, we found that pigeons can form a single class consisting of four members (many-to-one matching) when the alternative class has only one member (one-to-one matching). In Experiment 2, we ruled out the possibility that the pigeons acquired the hybrid one-to-one/many-to-one task by developing a single-code/default coding strategy as earlier research suggested that it might. Thus, pigeons can develop a functional class consisting of as many as four members, with the alternative class consisting of a single member. |
Address |
Department of Psychology, University of Kentucky, Lexington, KY 40506-0044, USA |
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0376-6357 |
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PMID:15518989 |
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no |
Call Number |
refbase @ user @ |
Serial |
228 |
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