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	Author	Beckers, T.; Miller, R.R.; De Houwer, J.; Urushihara, K.
	Title	Reasoning rats: forward blocking in Pavlovian animal conditioning is sensitive to constraints of causal inference			Type	Journal Article
	Year	2006	Publication	Journal of experimental psychology. General	Abbreviated Journal	J Exp Psychol Gen
	Volume	135	Issue	1	Pages	92-102
	Keywords	Animals; Association Learning; Cognition; Conditioning, Classical; Cues; Fear; Female; Inhibition (Psychology); Male; Motivation; Problem Solving; Rats; Rats, Sprague-Dawley
	Abstract	Forward blocking is one of the best-documented phenomena in Pavlovian animal conditioning. According to contemporary associative learning theories, forward blocking arises directly from the hardwired basic learning rules that govern the acquisition or expression of associations. Contrary to this view, here the authors demonstrate that blocking in rats is flexible and sensitive to constraints of causal inference, such as violation of additivity and ceiling considerations. This suggests that complex cognitive processes akin to causal inferential reasoning are involved in a well-established Pavlovian animal conditioning phenomenon commonly attributed to the operation of basic associative processes.
	Address	Department of Psychology, Binghamton University, State University of New York, NY, USA. tom.beckers@psy.kuleuven.be
	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	0096-3445	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:16478318			Approved	no
	Call Number	refbase @ user @			Serial	155
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	Author	de Waal, F.B.M.; Davis, J.M.
	Title	Capuchin cognitive ecology: cooperation based on projected returns			Type	Journal Article
	Year	2003	Publication	Neuropsychologia	Abbreviated Journal	Neuropsychologia
	Volume	41	Issue	2	Pages	221-228
	Keywords	Animals; Attention; Cebus/psychology; Cooperative Behavior; Decision Making; Dominance-Subordination; Female; Male; Motivation; Reaction Time; Reinforcement Schedule; Social Behavior
	Abstract	Stable cooperation requires that each party's pay-offs exceed those available through individual action. The present experimental study on brown capuchin monkeys (Cebus apella) investigated if decisions about cooperation are (a) guided by the amount of competition expected to follow the cooperation, and (b) made instantaneously or only after a period of familiarization. Pairs of adult monkeys were presented with a mutualistic cooperative task with variable opportunities for resource monopolization (clumped versus dispersed rewards), and partner relationships (kin versus nonkin). After pre-training, each pair of monkeys (N=11) was subjected to six tests, consisting of 15 2 min trials each, with rewards available to both parties. Clumped reward distribution had an immediate negative effect on cooperation: this effect was visible right from the start, and remained visible even if clumped trials alternated with dispersed trials. The drop in cooperation was far more dramatic for nonkin than kin, which was explained by the tendency of dominant nonkin to claim more than half of the rewards under the clumped condition. The immediacy of responses suggests a decision-making process based on predicted outcome of cooperation. Decisions about cooperation thus take into account both the opportunity for and the likelihood of subsequent competition over the spoils.
	Address	Living Links, Yerkes Primate Center, Emory University, 954 N. Gatewood Road, Atlanta, GA 30322, USA. dewaal@emory.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	0028-3932	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:12459220			Approved	no
	Call Number	refbase @ user @			Serial	182
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	Author	de Waal, F.B.
	Title	Food transfers through mesh in brown capuchins			Type	Journal Article
	Year	1997	Publication	Journal of comparative psychology (Washington, D.C. : 1983)	Abbreviated Journal	J Comp Psychol
	Volume	111	Issue	4	Pages	370-378
	Keywords	Animals; Cebus/psychology; Feeding Behavior; Female; Food Preferences/psychology; Male; Motivation; Sex Factors; Social Behavior; Social Environment
	Abstract	Capuchin monkeys (Cebus apella) share food even if their partner is behind a mesh restraint. Pairs of adult capuchins were moved into a test chamber in which 1 monkey received cucumber pieces for 20 min and the other received apple slices during the following 20 min. Tolerant transfers of food occurred reciprocally among females: The rate of transfer from Female B to A in the second test phase varied with the rate from Female A to B in the first test phase. Several social mechanisms may explain this reciprocity. Whereas this study does not contradict cognitively complex explanations (e.g., mental record keeping of given and received food), the results are consistent with a rather simple explanation: that food sharing reflects a combination of affiliative tendency and high tolerance. The study suggests that sharing mechanisms may be different for adult male capuchins, with males sharing food more readily and less discriminatingly than females.
	Address	Yerkes Primate Center, Emory University, Atlanta, Georgia 30329, USA. dewaal@emory.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	0735-7036	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:9419882			Approved	no
	Call Number	refbase @ user @			Serial	198
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	Author	Zentall, T.R.
	Title	Action imitation in birds			Type	Journal Article
	Year	2004	Publication	Learning & behavior : a Psychonomic Society publication	Abbreviated Journal	Learn Behav
	Volume	32	Issue	1	Pages	15-23
	Keywords	Adaptation, Psychological; Animals; Birds; Imitative Behavior; Imprinting (Psychology); Learning; Motivation; Psychological Theory; Social Environment; *Social Facilitation; Vocalization, Animal
	Abstract	Action imitation, once thought to be a behavior almost exclusively limited to humans and the great apes, surprisingly also has been found in a number of bird species. Because imitation has been viewed by some psychologists as a form of intelligent behavior, there has been interest in how it is distributed among animal species. Although the mechanisms responsible for action imitation are not clear, we are now at least beginning to understand the conditions under which it occurs. In this article, I try to identify and differentiate the various forms of socially influenced behavior (species-typical social reactions, social effects on motivation, social effects on perception, socially influenced learning, and action imitation) and explain why it is important to differentiate imitation from other forms of social influence. I also examine some of the variables that appear to be involved in the occurrence of imitation. Finally, I speculate about why a number of bird species, but few mammal species, appear to imitate.
	Address	Department of Psychology, University of Kentucky, Lexington, Kentucky 40506, USA. zentall@uky.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	1543-4494	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:15161137			Approved	no
	Call Number	refbase @ user @			Serial	230
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	Author	Dorrance, B.R.; Zentall, T.R.
	Title	Imitative learning in Japanese quail (Coturnix japonica) depends on the motivational state of the observer quail at the time of observation			Type	Journal Article
	Year	2001	Publication	Journal of comparative psychology (Washington, D.C. : 1983)	Abbreviated Journal	J Comp Psychol
	Volume	115	Issue	1	Pages	62-67
	Keywords	Animals; Behavior, Animal; Coturnix; Female; Imitative Behavior; Learning; Male; *Motivation; Reinforcement (Psychology); Time Factors
	Abstract	The 2-action method was used to examine whether imitative learning in Japanese quail (Coturnix japonica) depends on the motivational state of the observer quail at the time of observation of the demonstrated behavior. Two groups of observers were fed before observation (satiated groups), whereas 2 other groups of observers were deprived of food before observation (hungry groups). Quail were tested either immediately following observation or after a 30-min delay. Results indicated that quail in the hungry groups imitated, whereas those in the satiated groups did not, regardless of whether their test was immediate or delayed. The results suggest that observer quail may not learn (through observation) behavior that leads to a reinforcer for which they are unmotivated at the time of test. In addition, the results show that quail are able to delay the performance of a response acquired through observation (i.e., they show deferred imitation).
	Address	Department of Psychology, University of Kentucky, Lexington 40506-0044, 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	0735-7036	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:11334220			Approved	no
	Call Number	refbase @ user @			Serial	245
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	Author	Lonon, A.M.; Zentall, T.R.
	Title	Transfer of value from S+ to S- in simultaneous discriminations in humans			Type	Journal Article
	Year	1999	Publication	The American journal of psychology	Abbreviated Journal	Am J Psychol
	Volume	112	Issue	1	Pages	21-39
	Keywords	Adolescent; Adult; Animals; Color Perception; Columbidae; Conditioning, Classical; Discrimination Learning; Female; Humans; Male; Middle Aged; Motivation; Orientation; Pattern Recognition, Visual; Psychomotor Performance; Reaction Time; *Transfer (Psychology)
	Abstract	When animals learn a simultaneous discrimination, some of the value of the positive stimulus (S+) appears to transfer to the negative stimulus (S-). The present experiments demonstrate that such value transfer can also be found in humans. In Experiment 1 humans were trained on 2 simple simultaneous discriminations, the first between a highly positive stimulus, A (1,000 points); and a negative stimulus, B (0 points); and the second between a less positive stimulus, C (100 points); and a negative stimulus, D (0 points). On test trials, most participants preferred B over D. In Experiments 2 and 3 the value of the 2 original discriminations was equated in training (A[100]B[0] and C[100]D[0]). In Experiment 2 the values of the positive stimuli were then altered (A[1,000]C[0]); again, most participants preferred B over D. In Experiment 3, however, when the values of B and D were altered (B[1,000]D[0]), participants were indifferent to A and C. Thus, the mechanism that underlies value transfer in humans appears to be related to Pavlovian second-order conditioning. Similar mechanisms may be involved in assimilation processes in social contexts.
	Address	University of 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	0002-9556	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:10696277			Approved	no
	Call Number	refbase @ user @			Serial	249
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	Author	Clement, T.S.; Weaver, J.E.; Sherburne, L.M.; Zentall, T.R.
	Title	Simultaneous discrimination learning in pigeons: value of S- affects the relative value of its associated S+			Type	Journal Article
	Year	1998	Publication	The Quarterly journal of experimental psychology. B, Comparative and physiological psychology	Abbreviated Journal	Q J Exp Psychol B
	Volume	51	Issue	4	Pages	363-378
	Keywords	Animals; Attention; Color Perception; Columbidae; Discrimination Learning; Female; Male; *Motivation; Orientation; Transfer (Psychology)
	Abstract	In a simple simultaneous discrimination involving a positive stimulus (S+) and a negative stimulus (S-), it has been hypothesized that positive value can transfer from the S+ to the S- (thus increasing the relative value of the S-) and also that negative value can transfer from the S- to the S+ (thus diminishing the relative value of the S+; Fersen, Wynne, Delius, & Staddon, 1991). Evidence for positive value transfer has been reported in pigeons (e.g. Zentall & Sherburne, 1994). The purpose of the present experiments was to determine, in a simultaneous discrimination, whether the S- diminishes the value of the S+ or the S- is contrasted with the S+ (thus enhancing the value of the S+). In two experiments, we found evidence for contrast, rather than value transfer, attributable to simultaneous discrimination training. Thus, not only does the S+ appear to enhance the value of the S-, but the S- appears to enhance rather than reduce the value of the S+.
	Address	Department of Psychology, University of Kentucky, Lexington 40506-0044, 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	0272-4995	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:9854439			Approved	no
	Call Number	refbase @ user @			Serial	252
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	Author	Akins, C.K.; Zentall, T.R.
	Title	Imitative learning in male Japanese quail (Coturnix japonica) using the two-action method			Type	Journal Article
	Year	1996	Publication	Journal of comparative psychology (Washington, D.C. : 1983)	Abbreviated Journal	J Comp Psychol
	Volume	110	Issue	3	Pages	316-320
	Keywords	Animals; Appetitive Behavior; Attention; Coturnix; Imitative Behavior; Male; Motivation; Transfer (Psychology)
	Abstract	The study of imitative learning in animals has suffered from the presence of a number of confounding motivational and attentional factors (e.g., social facilitation and stimulus enhancement). The two-action method avoids these problems by exposing observers to demonstrators performing a response (e.g., operating a treadle) using 1 of 2 distinctive topographies (e.g., by pecking or by stepping). Japanese quail (Coturnix japonica) observers exposed to conspecific demonstrators showed a high correlation between the topography of the response they observed and the response they performed. These data provide strong evidence for the existence of true imitative learning in an active, precocious bird under conditions that control for alternative accounts.
	Address	Department of Psychology, University of Kentucky, Lexington 40506-0044, 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	0735-7036	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:8858851			Approved	no
	Call Number	refbase @ user @			Serial	254
Permanent link to this record



	Author	Zentall, T.R.; Roper, K.L.; Sherburne, L.M.
	Title	Most directed forgetting in pigeons can be attributed to the absence of reinforcement on forget trials during training or to other procedural artifacts			Type	Journal Article
	Year	1995	Publication	Journal of the experimental analysis of behavior	Abbreviated Journal	J Exp Anal Behav
	Volume	63	Issue	2	Pages	127-137
	Keywords	Animals; Attention; Color Perception; Columbidae; Cues; Discrimination Learning; Mental Recall; Motivation; Pattern Recognition, Visual; Reinforcement Schedule; Retention (Psychology)
	Abstract	In research on directed forgetting in pigeons using delayed matching procedures, remember cues, presented in the delay interval between sample and comparisons, have been followed by comparisons (i.e., a memory test), whereas forget cues have been followed by one of a number of different sample-independent events. The source of directed forgetting in delayed matching to sample in pigeons was examined in a 2 x 2 design by independently manipulating whether or not forget-cue trials in training ended with reinforcement and whether or not forget-cue trials in training included a simultaneous discrimination (involving stimuli other than those used in the matching task). Results were consistent with the hypothesis that reinforced responding following forget cues is sufficient to eliminate performance deficits on forget-cue probe trials. Only when reinforcement was omitted on forget-cue trials in training (whether a discrimination was required or not) was there a decrement in accuracy on forget-cue probe trials. When reinforcement is present, however, the pattern of responding established during and following a forget cue in training may also play a role in the directed forgetting effect. These findings support the view that much of the evidence for directed forgetting using matching procedures may result from motivational and behavioral artifacts rather than the loss of memory.
	Address	Department of Psychology, University of Kentucky, Lexington 40506
	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	0022-5002	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:7714447			Approved	no
	Call Number	refbase @ user @			Serial	256
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	Author	Zentall, T.R.; Sherburne, L.M.
	Title	Transfer of value from S+ to S- in a simultaneous discrimination			Type	Journal Article
	Year	1994	Publication	Journal of experimental psychology. Animal behavior processes	Abbreviated Journal	J Exp Psychol Anim Behav Process
	Volume	20	Issue	2	Pages	176-183
	Keywords	Animals; Appetitive Behavior; Attention; Color Perception; Columbidae; Discrimination Learning; Female; Male; Motivation; Orientation; Pattern Recognition, Visual; Problem Solving; Reinforcement Schedule; *Transfer (Psychology)
	Abstract	Value transfer theory has been proposed to account for transitive inference effects (L. V. Fersen, C. D. L. Wynne, J. D. Delius, & J. E. R. Staddon, 1991), in which following training on 4 simultaneous discriminations (A+B-, B+C-, C+D-, D+E-) pigeons show a preference for B over D. According to this theory, some of the value of reinforcement acquired by each S+ transfers to the S-. In the transitive inference experiment, C (associated with both reward and nonreward) can transfer less value to D than A (associated only with reward) can transfer to B. Support for value transfer theory was demonstrated in 2 experiments in which an S- presented in the context of a stimulus to which responses were always reinforced (S+) was preferred over an S- presented in the context of a stimulus to which responses were sometimes reinforced (S +/-).
	Address	Department of Psychology, University of Kentucky, Lexington 40506
	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	0097-7403	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:8189186			Approved	no
	Call Number	refbase @ user @			Serial	258
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