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	Author	Cleveland, A.; Rocca, A.M.; Wendt, E.L.; Westergaard, G.C.
	Title	Transport of tools to food sites in tufted capuchin monkeys (Cebus apella)			Type	Journal Article
	Year	2004	Publication	Animal Cognition	Abbreviated Journal	Anim. Cogn.
	Volume	7	Issue	3	Pages	193-198
	Keywords	Animals; Association Learning; Cebus/psychology; Concept Formation; Feeding Behavior; Female; Male; *Problem Solving
	Abstract	Tool use and transport represent cognitively important aspects of early hominid evolution, and nonhuman primates are often used as models to examine the cognitive, ecological, morphological and social correlates of these behaviors in order to gain insights into the behavior of our early human ancestors. In 2001, Jalles-Filho et al. found that free-ranging capuchin monkeys failed to transport tools (stones) to food sites (nuts), but transported the foods to the tool sites. This result cast doubt on the usefulness of Cebus to model early human tool-using behavior. In this study, we examined the performance of six captive tufted capuchin monkeys (Cebus apella) in a tool transport task. Subjects were provided with the opportunity to transport two different tools to fixed food reward sites when the food reward was visible from the tool site and when the food reward was not visible from the tool site. We found that the subjects quickly and readily transported probing tools to an apparatus baited with syrup, but rarely transported stones to a nut-cracking apparatus. We suggest that the performance of the capuchins here reflects an efficient foraging strategy, in terms of energy return, among wild Cebus monkeys.
	Address	Alpha Genesis, 95 Castle Hall Road, P.O. Box 557, Yemassee, SC 29945, USA
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1435-9448	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:15022055			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2539
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	Author	Uller, C.
	Title	Disposition to recognize goals in infant chimpanzees			Type	Journal Article
	Year	2004	Publication	Animal Cognition	Abbreviated Journal	Anim. Cogn.
	Volume	7	Issue	3	Pages	154-161
	Keywords	Analysis of Variance; Animals; Female; Fixation, Ocular; Goals; Intention; Male; Pan troglodytes/psychology; Pattern Recognition, Visual; Problem Solving; *Recognition (Psychology)
	Abstract	Do nonhuman primates attribute goals to others? Traditional studies with chimpanzees provide equivocal evidence for “mind reading” in nonhuman primates. Here we adopt looking time, a methodology commonly used with human infants to test infant chimpanzees. In this experiment, four infant chimpanzees saw computer-generated stimuli that mimicked a goal-directed behavior. The baby chimps performed as well as human infants, namely, they were sensitive to the trajectories of the objects, thus suggesting that chimpanzees may be endowed with a disposition to understand goal-directed behaviors. The theoretical implications of these results are discussed.
	Address	Department of Psychology, University of Essex, Wivenhoe Park, C04 3SQ, Colchester, UK. uller40@yahoo.com
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1435-9448	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:14685823			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2546
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	Author	Neuringer, A.
	Title	Reinforced variability in animals and people: implications for adaptive action			Type	Journal Article
	Year	2004	Publication	The American Psychologist	Abbreviated Journal	Am Psychol
	Volume	59	Issue	9	Pages	891-906
	Keywords	Animals; Behavior, Animal; Choice Behavior; Conditioning, Operant; Creativeness; Discrimination (Psychology); Humans; Memory; Problem Solving; Reinforcement (Psychology)
	Abstract	Although reinforcement often leads to repetitive, even stereotyped responding, that is not a necessary outcome. When it depends on variations, reinforcement results in responding that is diverse, novel, indeed unpredictable, with distributions sometimes approaching those of a random process. This article reviews evidence for the powerful and precise control by reinforcement over behavioral variability, evidence obtained from human and animal-model studies, and implications of such control. For example, reinforcement of variability facilitates learning of complex new responses, aids problem solving, and may contribute to creativity. Depression and autism are characterized by abnormally repetitive behaviors, but individuals afflicted with such psychopathologies can learn to vary their behaviors when reinforced for so doing. And reinforced variability may help to solve a basic puzzle concerning the nature of voluntary action.
	Address	Department of Psychology, Reed College, Portland, OR 97202, USA. allen.neuringer@reed.edu
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0003-066X	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:15584823			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4106
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	Author	Clement, T.S.; Zentall, T.R.
	Title	Choice based on exclusion in pigeons			Type	Journal Article
	Year	2003	Publication	Psychonomic bulletin & review	Abbreviated Journal	Psychon Bull Rev
	Volume	10	Issue	4	Pages	959-964
	Keywords	Animals; Appetitive Behavior; Association Learning; Choice Behavior; Color Perception; Columbidae; Discrimination Learning; Memory, Short-Term; *Problem Solving; Psychomotor Performance; Reaction Time; Transfer (Psychology)
	Abstract	When humans acquire a conditional discrimination and are given a novel-sample-comparison choice, they often reject a comparison known to be associated with a different sample and choose the alternative comparison by default (or by exclusion). In Experiment 1, we found that if, following matching training, we replaced both of the samples, acquisition took five times longer than if we replaced only one of the samples. Apparently, the opportunity to reject one of the comparisons facilitated the association of the other sample with the remaining comparison. In Experiment 2, we first trained pigeons to treat two samples differently (to associate Sample A with Comparison 1 and Sample B with Comparison 2) and then trained them to associate one of those samples with a new comparison (e.g., Sample A with Comparison 3) and to associate a novel sample (Sample C) with a different, new comparison (Comparison 4). When Sample B then replaced Sample C, the pigeons showed a significant tendency to choose Comparison 4 over Comparison 3. Thus, when given the opportunity, pigeons will choose by exclusion.
	Address	University of Kentucky, Lexington, Kentucky, USA
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1069-9384	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:15000545			Approved	no
	Call Number	refbase @ user @			Serial	233
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	Author	Horowitz, A.C.
	Title	Do humans ape? Or do apes human? Imitation and intention in humans (Homo sapiens) and other animals			Type	Journal Article
	Year	2003	Publication	Journal of comparative psychology	Abbreviated Journal	J Comp Psychol
	Volume	117	Issue	3	Pages	325-336
	Keywords	Adolescent; Adult; Animals; Appetitive Behavior; Attention; Child, Preschool; Concept Formation; Female; Humans; Imitative Behavior; Male; Motivation; Pan troglodytes/psychology; Problem Solving; *Psychomotor Performance; Reaction Time; Species Specificity
	Abstract	A. Whiten, D. M. Custance, J.-C. Gomez, P. Teixidor, and K. A. Bard (1996) tested chimpanzees' (Pan troglodytes) and human children's (Homo sapiens) skills at imitation with a 2-action test on an “artificial fruit.” Chimpanzees imitated to a restricted degree; children were more thoroughly imitative. Such results prompted some to assert that the difference in imitation indicates a difference in the subjects' understanding of the intentions of the demonstrator (M. Tomasello, 1996). In this experiment, 37 adult human subjects were tested with the artificial fruit. Far from being perfect imitators, the adults were less imitative than the children. These results cast doubt on the inference from imitative performance to an ability to understand others' intentions. The results also demonstrate how any test of imitation requires a control group and attention to the level of behavioral analysis.
	Address	Department of Cognitive Science, University of California, San Diego, CA, USA. ahorowitz@crl.ucsd.edu
	Corporate Author				Thesis
	Publisher		Place of Publication	Washington, D.C. : 1983	Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0735-7036	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:14498809			Approved	yes
	Call Number	refbase @ user @			Serial	736
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	Author	Stoinski, T.S.; Whiten, A.
	Title	Social learning by orangutans (Pongo abelii and Pongo pygmaeus) in a simulated food-processing task			Type	Journal Article
	Year	2003	Publication	Journal of comparative psychology (Washington, D.C. : 1983)	Abbreviated Journal	J Comp Psychol
	Volume	117	Issue	3	Pages	272-282
	Keywords	Animal Communication; Animals; Feeding Behavior; Female; Imitative Behavior; Male; Pongo pygmaeus/psychology; Problem Solving; Psychomotor Performance; Social Environment; Species Specificity; *Transfer (Psychology)
	Abstract	Increasing evidence for behavioral differences between populations of primates has created a resurgence of interest in examining mechanisms of information transfer between individuals. The authors examined the social transmission of information in 15 captive orangutans (Pongo abelii and Pongo pygmaeus) using a simulated food-processing task. Experimental subjects were shown 1 of 2 methods for removing a suite of defenses on an “artificial fruit.” Control subjects were given no prior exposure before interacting with the fruit. Observing a model provided a functional advantage in the task, as significantly more experimental than control subjects opened the fruit. Within the experimental groups, the authors found a trend toward differences in the actual behaviors used to remove 1 of the defenses. Results support observations from the wild implying horizontal transfer of information in orangutans and show that a number of social learning processes are likely to be involved in the transfer of knowledge in this species.
	Address	Department of Primate Research, Zoo Atlanta, Atlanta, GA 30315, USA. tstoinski@zooatlanta.org
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0735-7036	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:14498803			Approved	no
	Call Number	refbase @ user @			Serial	737
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	Author	Hirata, S.; Celli, M.L.
	Title	Role of mothers in the acquisition of tool-use behaviours by captive infant chimpanzees			Type	Journal Article
	Year	2003	Publication	Animal Cognition	Abbreviated Journal	Anim. Cogn.
	Volume	6	Issue	4	Pages	235-244
	Keywords	Animals; Cooking and Eating Utensils; Feeding Behavior; Female; Imitative Behavior/physiology; Male; Mothers/psychology; Motor Skills/physiology; Pan troglodytes/growth & development/psychology; Problem Solving/physiology
	Abstract	This article explores the maternal role in the acquisition of tool-use behaviours by infant chimpanzees ( Pan troglodytes). A honey-fishing task, simulating ant/termite fishing found in the wild, was introduced to three dyads of experienced mother and naive infant chimpanzees. Four fishing sites and eight sets of 20 objects to be used as tools, not all appropriate, were available. Two of the mothers constantly performed the task, using primarily two kinds of tools; the three infants observed them. The infants, regardless of the amount of time spent observing, successfully performed the task around the age of 20-22 months, which is earlier than has been recorded in the wild. Two of the infants used the same types of tools that the adults predominantly used, suggesting that tool selectivity is transmitted. The results also show that adults are tolerant of infants, even if unrelated; infants were sometimes permitted to lick the tools, or were given the tools, usually without honey, as well as permitted to observe the adult performances closely.
	Address	Primate Research Institute, Kyoto University, Inuyama, Kanrin, 484-8506 Aichi, Japan. hirata@gari.be.to
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1435-9448	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:13680401			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2555
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	Author	Funk, M.S.
	Title	Problem solving skills in young yellow-crowned parakeets (Cyanoramphus auriceps)			Type	Journal Article
	Year	2002	Publication	Animal Cognition	Abbreviated Journal	Anim. Cogn.
	Volume	5	Issue	3	Pages	167-176
	Keywords	Animals; Cognition; Discrimination Learning; Female; Motor Skills; Parakeets; Play and Playthings; Problem Solving; Social Behavior
	Abstract	Despite the long divergent evolutionary history of birds and mammals, early avian and primate cognitive development have many convergent features. Some of these features were investigated with a series of tasks designed to assess human infant development. The tasks were presented to young parakeets to assess their means-end problem solving abilities. Examples of these early skills are: attaining and playing with objects, retrieving rewards through use of a stick or rake, or by pulling in rewards on supports or on the ends of strings. Twelve such tasks were presented to 11 young yellow-crowned parakeets ( Cyanoramphus auriceps) to investigate their natural abilities; there was no attempt to train them to do those tasks that they did not spontaneously perform. Six of the birds were parent-raised and five were hand-raised. The birds completed 9 of the 12 tasks, demonstrating all the Piagetian sensorimotor circular reactions, but they failed to hand-watch (“claw-watch”), to stack objects, or to fill a container. Their ordinality on the tasks differed from that of human infants in that locomotion to obtain objects occurred earlier in the avian sequence of development and the mid-level tasks were performed by the two groups of avian subjects in a mixed order perhaps indicating that these abilities may not emerge in any particular order for these birds as they supposedly do for human infants. The hand-raised group needed fewer sessions to complete these means-end tasks.
	Address	Department of Anthropology, Northwestern University, Evanston, Illinois, USA. mdfunk@northwestern.edu
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1435-9448	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:12357289			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2596
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	Author	Clement, T.S.; Zentall, T.R.
	Title	Development of a single-code/default coding strategy in pigeons			Type	Journal Article
	Year	2000	Publication	Psychological science : a journal of the American Psychological Society / APS	Abbreviated Journal	Psychol Sci
	Volume	11	Issue	3	Pages	261-264
	Keywords	Animals; Attention; Columbidae; Discrimination Learning; Female; Male; Pattern Recognition, Visual; *Problem Solving; Retention (Psychology)
	Abstract	We tested the hypothesis that pigeons could use a cognitively efficient coding strategy by training them on a conditional discrimination (delayed symbolic matching) in which one alternative was correct following the presentation of one sample (one-to-one), whereas the other alternative was correct following the presentation of any one of four other samples (many-to-one). When retention intervals of different durations were inserted between the offset of the sample and the onset of the choice stimuli, divergent retention functions were found. With increasing retention interval, matching accuracy on trials involving any of the many-to-one samples was increasingly better than matching accuracy on trials involving the one-to-one sample. Furthermore, following this test, pigeons treated a novel sample as if it had been one of the many-to-one samples. The data suggest that rather than learning each of the five sample-comparison associations independently, the pigeons developed a cognitively efficient single-code/default coding strategy.
	Address	Department of Psychology, University of Kentucky, Lexington, KY 40506, USA
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0956-7976	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:11273414			Approved	no
	Call Number	refbase @ user @			Serial	246
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	Author	Sterling, E.J.; Povinelli, D.J.
	Title	Tool use, aye-ayes, and sensorimotor intelligence			Type	Journal Article
	Year	1999	Publication	Folia Primatologica; International Journal of Primatology	Abbreviated Journal	Folia Primatol (Basel)
	Volume	70	Issue	1	Pages	8-16
	Keywords	Animals; Behavior, Animal; Feeding Behavior; Female; Intelligence; Male; Problem Solving; Psychomotor Performance; Strepsirhini/physiology/psychology
	Abstract	Humans, chimpanzees, capuchins and aye-ayes all display an unusually high degree of encephalization and diverse omnivorous extractive foraging. It has been suggested that the high degree of encephalization in aye-ayes may be the result of their diverse, omnivorous extractive foraging behaviors. In combination with certain forms of tool use, omnivorous extractive foraging has been hypothesized to be linked to higher levels of sensorimotor intelligence (stages 5 or 6). Although free-ranging aye-ayes have not been observed to use tools directly in the context of their extractive foraging activities, they have recently been reported to use lianas as tools in a manner that independently suggests that they may possess stage 5 or 6 sensorimotor intelligence. Although other primate species which display diverse, omnivorous extractive foraging have been tested for sensorimotor intelligence, aye-ayes have not. We report a test of captive aye-ayes' comprehension of tool use in a situation designed to simulate natural conditions. The results support the view that aye-ayes do not achieve stage 6 comprehension of tool use, but rather may use trial-and-error learning to develop tool-use behaviors. Other theories for aye-aye encephalization are considered.
	Address	Deutsches Primatenzentrum, Gottingen, Germany
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0015-5713	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:10050062			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4178
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