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Author |
Poling, A.; Thomas, J.; Hall-Johnson, E.; Picker, M. |
Title |
Self-control revisited: Some factors that affect autoshaped responding |
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Journal Article |
Year |
1985 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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10 |
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1-2 |
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77-85 |
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Pigeons were exposed to autoshaping procedures under which 50% of red key illuminations were followed by 9-sec food deliveries, and 50% of blue key illuminations were followed by 3-sec food deliveries. When all key illuminations were 6 sec, pigeons preferred the red stimulus. Subsequent manipulations demonstrated that preference could be shifted to the blue stimulus by either increasing the duration of the red stimulus or imposing a delay interval between the offset of that stimulus and food delivery. A final experiment demonstrated that, in two of three subjects, preference for key illuminations associated with longer, but delayed, food deliveries generally increased as the duration of all key illuminations was lengthened. These results, obtained under conditions where keypecking had no programmed consequences, are similar to those previously observed under procedures involving a positive response-food dependency. |
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Equine Behaviour @ team @ |
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3606 |
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Perusse, D.; Lefebvre, L. |
Title |
Grouped sequential exploitation of food patches in a flock feeder, the feral pigeon |
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Journal Article |
Year |
1985 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
Volume |
11 |
Issue |
1 |
Pages |
39-52 |
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Feral and laboratory flocks of rock doves ( ) show a pattern of grouped sequential exploitation when simultaneously presented with two dispersed, depleting patches of seed. This behavior contrasts with the ideal free distribution pattern shown when patches are small and concentrated. Grouped sequential exploitation consists of two phases: all pigeons first land together and feed at one patch, then leave one by one for the other patch. Departure times of individuals for the second patch are correlated with feeding rate at patch 1, which is in turn correlated with position in the dominance hierarchy. The decision to switch from patch 1 to patch 2 improves individual feeding rates in all cases, but is done slightly later than it should according to optimal foraging theory. |
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Equine Behaviour @ team @ |
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4227 |
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Author |
Petherick, J.C.; Waddington, D.; Duncan, I.J.H. |
Title |
Learning to gain access to a foraging and dustbathing substrate by domestic fowl: is `out of sight out of mind'? |
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Journal Article |
Year |
1991 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
Volume |
22 |
Issue |
3 |
Pages |
213-226 |
Keywords |
Domestic fowl; Dustbathing; Welfare; Learning; Cognition |
Abstract |
Domestic fowl were deprived of the opportunity to perform litter-related behaviour for three or four days and were tested in a Y-maze (which they had previously been trained to run) for their ability to associate a coloured cue with gaining access to peat. When the goal boxes were within sight of the choice point, most birds chose peat. However, when the birds had to rely solely on the coloured cue only one bird from 12 showed learning. However, the birds seemed to have some expectation of a reward, as they ran faster if, on the previous trial, they had chosen peat. The inability of the birds to learn the association may have been an artefact of the schedule of deprivation and testing, for when they were hungry and tested in the same way they were again unable to learn an association between the same coloured cue and food reward. The experiment with peat was repeated using “massed” trials (several trials in immediate succession) during training and testing and six from 15 birds showed learning. These results suggest that the initial failure to learn was probably due to the training and testing schedule, that access to peat appears to be rewarding and that hens can learn an association between an abstract cue and a rewarding consequence. This is consistent with the possibility that domestic fowls may have some cognitive representation of peat when it is out of sight. |
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Equine Behaviour @ team @ |
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3609 |
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Ord, T.J.; Evans, C.S. |
Title |
Interactive video playback and opponent assessment in lizards |
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Journal Article |
Year |
2002 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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59 |
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2 |
Pages |
55-65 |
Keywords |
Animal communication; Display; Lizard; Playback; Visual signal |
Abstract |
Video playback has been used to explore many issues in animal communication, but the scope of this work has been constrained by the lack of stimulus-subject interaction. In many natural contexts, each participant's signalling behaviour is dependent from moment-to-moment on that of the other. Analyses of acoustic communication demonstrate the value of reproducing such social contingencies. We assessed the utility of interactive playback for studies of visual signalling by comparing the responses of male Jacky dragons, Amphibolurus muricatus, to interactive and non-interactive digital video playbacks of a life-sized conspecific. Displays produced by lizards in the interactive condition had the effect of suppressing the aggressive display of their simulated opponent. Each stimulus sequence generated during an interactive playback was subsequently played to a size-matched control animal. Males that could interact with the video stimulus responded principally with aggressive displays, while those that could not produced a mixture of aggressive and appeasement signals. Adding a degree of receiver responsiveness is hence sufficient to alter the type of signal evoked, even when video stimuli are physically identical. Interactive playback permits the experimental study of a broader range of theoretical topics and can enhance the realism of video stimuli. |
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refbase @ user @ |
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539 |
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Le Pendu, Y.; Guilhem, C.; Briedermann, L.; Maublanc, M.-L.; Gerard, J.-F. |
Title |
Interactions and associations between age and sex classes in mouflon sheep (Ovis gmelini) during winter |
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Journal Article |
Year |
2000 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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52 |
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2-3 |
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97-107 |
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Group composition; Interactive behaviour; Sexual segregation; Social organisation; Ungulate; Wild sheep |
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Equine Behaviour @ team @ |
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4248 |
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Author |
Robinson, T.A.; Foster, T.M.; Temple, W.; Poling, A. |
Title |
Performance of domestic hens under progressive-ratio schedules of food delivery |
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Journal Article |
Year |
1995 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
Volume |
34 |
Issue |
3 |
Pages |
233-239 |
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Progressive-ratio schedule; Domestic hen; Behavioral economics; Satiation |
Abstract |
Domestic hens were exposed to progressive-ratio 2 and progressive-ratio 10 schedules of food delivery with different initial ratios (2, 10, 20, 30, and 40). Breaking points, defined as the largest ratios completed before responding ceased for 600 consecutive seconds, were recorded under all conditions. In general, breaking points were higher under the PR 10 schedule than under the PR 2 schedule, and the value of the initial ratio did not systematically affect the breaking point. The former finding suggests that relative satiation affected breaking points in the present study, but the latter finding suggests that the primary determinant was the `price' of the reinforcer, defined in terms of the number of responses required to produce it. Breaking points were similar under conditions where initial ratios changed from session to session and under more conventional conditions, where initial ratios remained unchanged over several sessions. |
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Equine Behaviour @ team @ |
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3605 |
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Author |
Lejeune, H.; Macar, F.; Zakay, D. |
Title |
Attention and timing: dual-task performance in pigeons |
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Journal Article |
Year |
1999 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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45 |
Issue |
1-3 |
Pages |
141-157 |
Keywords |
Timing; Dual task; Attention; Pigeons |
Abstract |
Pigeons were exposed to an analog of a `dual-task' procedure used to test attentional models of timing in humans. After separate training on an auditory duration discrimination and on a variable ratio (VR) schedule, VR episodes lasting for 5 s were superimposed on the stimuli to be timed, either early (E) or late (L) during the trial. Trials with VR yielded underestimation of the target durations (increased % of `short' choices), relative to trials without VR, and this effect was stronger under the L than under the E condition. Data were similar to those collected with humans and support attentional models of timing according to which the simultaneous non-timing task uses processing resources which are diverted from the timing mechanisms. |
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Equine Behaviour @ team @ |
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3582 |
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Author |
Poling, A.; Temple, W.; Foster, T.M. |
Title |
The differential outcomes effect: A demonstration in domestic chickens responding under a titrating-delayed-matching-to-sample procedure |
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Journal Article |
Year |
1996 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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36 |
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2 |
Pages |
109-115 |
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Domestic hen; Titrating-delayed-matching-to-sample procedure; Differential outcomes effect; Conditional discrimination; Animal welfare |
Abstract |
The differential outcomes effect refers to the increase in speed of acquisition or terminal accuracy that occurs in discrimination training when each of two or more discriminative stimuli is correlated with a different outcome (e.g. type of reinforcer). The present study demonstrated this effect in domestic hens exposed to a titrating-delayed-matching-to-sample procedure, under which correct responses increased (and incorrect responses decreased) the delay between the offset of a sample stimulus and the onset of two comparison stimuli. Colors of key illumination (red, green) were used as sample and comparison stimuli and correct responses resulted in 1- or 4-s food deliveries. When 1-s food deliveries consistently followed correct responses to one key color and 4-s food deliveries followed correct responses to the other key color, the maximum delay reached by the hens and their overall accuracy was significantly higher than when 1- and 4-s food deliveries were randomly arranged following correct responses to both key colors. These data constitute the first demonstration of the differential outcomes effect in chickens, and in any species evaluated under a titrating-delayed-matching-to-sample procedure. |
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Equine Behaviour @ team @ |
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3604 |
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Author |
Kraak, S.B.M. |
Title |
`Copying mate choice': Which phenomena deserve this term? |
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Journal Article |
Year |
1996 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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36 |
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1 |
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99-102 |
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Copying mate choice; Proximate/ultimate causes |
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1816 |
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Chalmeau, R.; Gallo, A. |
Title |
Cooperation in primates: Critical analysis of behavioural criteria |
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Journal Article |
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1995 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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35 |
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1-3 |
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101-111 |
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Cognition; Communication; Cooperation; Evolution; Primates |
Abstract |
Concerning hunting in chimpanzees, cooperation has generally been attributed to the behaviour of two or more individuals acting together to achieve a common goal (Boesch and Boesch, 1989). The common goal is often considered as the concrete result of a common action by two or several individuals. Although this result could be used as a criterion for cooperation, it could also be an outcome due to chance. We suggest that the goal, viewed as a concrete benefit shared by the partners, is not a requisite of cooperation but rather a possible consequence of a common action largely submitted to social constraints. Individuals engaged in a cooperative task in order to solve a problem have to exchange information to adjust to each other's behaviour. However, evidence of communication between partners during simultaneous cooperation is rare. An experiment in which two chimpanzees each had to simultaneously pull a handle to get a fruit was performed. We analysed not only the concrete result of the partners' activity but also what the individuals took into account before pulling a handle. We tried to specify what the chimpanzees learned by means of a series of logical propositions which we were able to confront the experimental results. |
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refbase @ user @ |
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570 |
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