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Author |
da Cruz, A.B.; Hirata, S.; dos Santos, M.E.; Mendonça, R.S. |
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Title |
Show me your best side: Lateralization of social and resting behaviors in feral horses |
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Journal Article |
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Year |
2023 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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206 |
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104839 |
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Cerebral lateralization; Drone technology; ; Hemispheric specialization; Horses; Social interactions |
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Growing evidence shows a variety of sensorial and motor asymmetries in social and non-social interactions in various species, indicating a lateralized processing of information by the brain. Using digital video cameras on tripods and drones, this study investigated lateralization in frequency and duration of social behavior patterns, in affiliative, agonistic, and resting contexts, in a feral population of horses (Equus ferus caballus) in Northern Portugal, consisting of 37 individuals organized in eight harem groups. Affiliative interactions (including grooming) were more often performed, and lasted longer, when recipients were positioned to the right side. In recumbent resting (animals lying down) episodes on the left side lasted longer. Our results of an affiliative behavior having a right side tendency, provide partial support to the valence-specific hypothesis of Ahern and Schwartz (1979) – left hemisphere dominance for positive affect, affiliative behaviors. Longer recumbent resting episodes on the left side may be due to synchronization. However, in both instances it is discussed how lateralization may be context dependent. Investigating the position asymmetries of social behaviors in feral equids will contribute to a better understanding of differential lateralization and hemispheric specialization from the ecological and evolutionary perspectives. |
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0376-6357 |
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Equine Behaviour @ team @ |
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6711 |
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Author |
Daniels, T.J.; Bekoff, M. |
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Title |
Feralization: The making of wild domestic animals |
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Journal Article |
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Year |
1989 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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19 |
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1-3 |
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79-94 |
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feralization; domestication; feral dogs |
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The widely accepted viewpoint that feralization is the reverse of domestication requires that the feralization process be restricted to populations of animals and, therefore, cannot occur in individuals. An alternative, ontogenetic approach is presented in which feralization is defined as the process by which individual domestic animals either become desocialized from humans, or never become socialized, and thus behave as untamed, non-domestic animals. Feralization will vary among species and, intraspecifically, will depend upon an individual's age and history of socialization to humans. Because feralization is not equated with morphological change resulting from evolutionary processes, species formation is not an accurate indicator of feral condition. |
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Cited By (since 1996): 5; Export Date: 24 October 2008 |
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Admin @ knut @ |
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4580 |
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Abeyesinghe, S.M.; Nicol, C.J.; Wathes. C.M.; Randall, J.M. |
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Title |
Development of a raceway method to assess aversion of domestic fowl to concurrent stressors |
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Journal Article |
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2001 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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56 |
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3 |
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175-194 |
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previous termConcurrent stressors; Aversion; Domestic fowlnext term; Transport; Vibration; Hyperthermia |
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The requirement for assessing the effects of stressor combinations in improving the welfare of animals has not been widely recognised. Knowledge of the effects of concurrent stressors is needed to improve environments such as transport, where animals are presented with many simultaneous challenges. However, no method for measuring the effects of different stressors with a common unit is currently available. A locomotor passive avoidance method was developed as a common currency measure of the aversion of domestic fowl to concurrent stressors, using vibrational and thermal stressors as an exemplar. Juvenile fowl, fasted overnight, were trained to run a raceway into a goal-box for small food rewards (FR1). When running consistently, the reinforcement schedule was superimposed with a FR5 treatment schedule (60 min confinement in the goal-box with either a control of no other stressors [N] or concurrent vibration and thermal stressors [VT]). Subsequent latency to return to the goal-box was recorded as a measure of aversion. The factors affecting bird response were addressed in a series of experiments to optimise the method and clarify interpretation of results. Pre-feeding (20% ration 2 h prior to testing) did not affect response, but increasing the number of treatment presentations facilitated learning and increased method sensitivity. Treatment responses were consistent across experiments; overall VT was avoided (P<0.001), but N was not. However, there was large individual variation in response to VT. A final experiment indicated that, given a visual discriminatory cue, birds were capable of learning the required association between entering the goal-box and receiving the treatment, suggesting that the delay responses were due to aversion rather than the immediate impact of treatment on ability to respond. Further work is required to test the singular stressors, but the method retains common currency potential for assessing aversion to multiple stressors. |
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Bio-Engineering Division, Silsoe Research Institute, Wrest Park, Silsoe, MK45 4HS, Bedford, UK |
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0376-6357 |
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PMID:11738510 |
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refbase @ user @ |
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85 |
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Author |
Virányi, Z.; Topál, J.; Gácsi, M.; Miklósi, Á.; Csányi, V. |
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Title |
Dogs respond appropriately to cues of humans' attentional focus |
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Journal Article |
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Year |
2004 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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66 |
Issue |
2 |
Pages |
161-172 |
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Keywords |
Animals; *Attention; Bonding, Human-Pet; Communication; *Cues; Dogs; Humans; Recognition (Psychology) |
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Dogs' ability to recognise cues of human visual attention was studied in different experiments. Study 1 was designed to test the dogs' responsiveness to their owner's tape-recorded verbal commands (Down!) while the Instructor (who was the owner of the dog) was facing either the dog or a human partner or none of them, or was visually separated from the dog. Results show that dogs were more ready to follow the command if the Instructor attended them during instruction compared to situations when the Instructor faced the human partner or was out of sight of the dog. Importantly, however, dogs showed intermediate performance when the Instructor was orienting into 'empty space' during the re-played verbal commands. This suggests that dogs are able to differentiate the focus of human attention. In Study 2 the same dogs were offered the possibility to beg for food from two unfamiliar humans whose visual attention (i.e. facing the dog or turning away) was systematically varied. The dogs' preference for choosing the attentive person shows that dogs are capable of using visual cues of attention to evaluate the human actors' responsiveness to solicit food-sharing. The dogs' ability to understand the communicatory nature of the situations is discussed in terms of their social cognitive skills and unique evolutionary history. |
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Department of Ethology, Eotvos Lorand University, Budapest, Hungary. zsofi.viranyi@freemail.hu |
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0376-6357 |
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PMID:15110918 |
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Equine Behaviour @ team @ |
Serial |
4957 |
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Author |
Friedrich, A.M.; Clement, T.S.; Zentall, T.R. |
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Title |
Functional equivalence in pigeons involving a four-member class |
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Journal Article |
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Year |
2004 |
Publication |
Behavioural processes |
Abbreviated Journal |
Behav. Process. |
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67 |
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3 |
Pages |
395-403 |
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Keywords |
Animals; *Association Learning; *Behavior, Animal; *Cognition; Columbidae; *Concept Formation |
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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. |
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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 |
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refbase @ user @ |
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228 |
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Author |
Friedrich, A.M.; Zentall, T.R. |
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Title |
Pigeons shift their preference toward locations of food that take more effort to obtain |
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Journal Article |
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Year |
2004 |
Publication |
Behavioural processes |
Abbreviated Journal |
Behav. Process. |
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Volume |
67 |
Issue |
3 |
Pages |
405-415 |
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Animals; *Behavior, Animal; *Choice Behavior; Columbidae; *Exertion; *Feeding Behavior; Reward |
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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. |
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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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refbase @ user @ |
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227 |
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Author |
Lafferty, K.D. |
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Title |
Look what the cat dragged in: do parasites contribute to human cultural diversity? |
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Journal Article |
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Year |
2005 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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Volume |
68 |
Issue |
3 |
Pages |
279-282 |
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Keywords |
Adaptation, Physiological/physiology; Adaptation, Psychological/physiology; Animals; Behavior/physiology; *Behavior Control; Cats/*parasitology; Cultural Diversity; Host-Parasite Relations; Humans; Personality/*physiology; Toxoplasma/*physiology; Toxoplasmosis/parasitology/*psychology |
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Western Ecological Research Center, United States Geological Survey, c/o Marine Science Institute, University of California, Santa Barbara, CA 93106, USA. lafferty@lifesci.ucsb.edu |
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PMID:15792708 |
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Equine Behaviour @ team @ |
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4148 |
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Zentall, T.R. |
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Title |
Selective and divided attention in animals |
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Journal Article |
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2005 |
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Behavioural processes |
Abbreviated Journal |
Behav. Process. |
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69 |
Issue |
1 |
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1-15 |
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Animals; *Attention; *Behavior, Animal; *Discrimination (Psychology); *Field Dependence-Independence; *Psychological Theory |
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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. |
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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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refbase @ user @ |
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224 |
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Author |
Shettleworth, S.J. |
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Title |
Taking the best for learning |
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Journal Article |
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Year |
2005 |
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Behavioural processes |
Abbreviated Journal |
Behav. Process. |
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69 |
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2 |
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147-9; author reply 159-63 |
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*Algorithms; Animals; *Behavior, Animal; Decision Making; Evolution; *Learning; *Models, Theoretical |
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Examples of how animals learn when multiple, sometimes redundant, cues are present provide further examples not considered by Hutchinson and Gigerenzer that seem to fit the principle of taking the best. “The best” may the most valid cue in the present circumstances; evolution may also produce species-specific biases to use the most functionally relevant cues. |
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Department of Psychology, University of Toronto, Toronto, Ont., Canada M5S 3G3. shettle@psych.utoronto.ca |
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PMID:15845301 |
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refbase @ user @ |
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361 |
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Dunbar, R.I.M.; McAdam, M.R.; O'connell, S. |
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Mental rehearsal in great apes (Pan troglodytes and Pongo pygmaeus) and children |
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Journal Article |
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2005 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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69 |
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3 |
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323-330 |
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Algorithms; Animals; Child; Child, Preschool; Food; Frontal Lobe/anatomy & histology/physiology; Humans; *Imagination; Pan troglodytes; Pongo pygmaeus; Problem Solving/*physiology; Psychomotor Performance/physiology; Reward |
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The ability to rehearse possible future courses of action in the mind is an important feature of advanced social cognition in humans, and the “social brain” hypothesis implies that it might also be a feature of primate social cognition. We tested two chimpanzees, six orangutans and 63 children aged 3-7 years on a set of four puzzle boxes, half of which were presented with an opportunity to observe the box before being allowed to open it (“prior view”), the others being given without an opportunity to examine the boxes before handling them (“no prior view”). When learning effects are partialled out, puzzle boxes in the “prior view” condition were opened significantly faster than boxes given in the “no prior view” condition by the children, but not by either of the great apes. The three species differ significantly in the speed with which they opened boxes in the “no prior view” condition. The three species' performance on this task was a function of relative frontal lobe volume, suggesting that it may be possible to identify quantitative neuropsychological differences between species. |
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Evolutionary Psychology Research Group, School of Biological Sciences, University of Liverpool, Biosciences Building, Crown Street, Liverpool L69 7ZB, UK. rimd@liv.ac.uk |
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PMID:15896530 |
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2097 |
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