| Records |
| Author |
Sovrano, V.A.; Bisazza, A.; Vallortigara, G. |
| Title |
How fish do geometry in large and in small spaces |
Type |
Journal Article |
| Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
10 |
Issue |
1 |
Pages |
47-54 |
Keywords  |
Animals; *Association Learning; Color Perception; Cues; *Discrimination Learning; *Distance Perception; *Fishes; Male; Pattern Recognition, Visual; Social Environment; *Space Perception; Visual Perception |
| Abstract |
It has been shown that children and non-human animals seem to integrate geometric and featural information to different extents in order to reorient themselves in environments of different spatial scales. We trained fish (redtail splitfins, Xenotoca eiseni) to reorient to find a corner in a rectangular tank with a distinctive featural cue (a blue wall). Then we tested fish after displacement of the feature on another adjacent wall. In the large enclosure, fish chose the two corners with the feature, and also tended to choose among them the one that maintained the correct arrangement of the featural cue with respect to geometric sense (i.e. left-right position). In contrast, in the small enclosure, fish chose both the two corners with the features and the corner, without any feature, that maintained the correct metric arrangement of the walls with respect to geometric sense. Possible reasons for species differences in the use of geometric and non-geometric information are discussed. |
| Address |
Department of General Psychology, University of Padua, Via Venezia, 8, 35131, Padova, Italy. valeriaanna.sovrano@unipd.it |
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English |
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1435-9448 |
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| Notes |
PMID:16794851 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2462 |
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| Author |
Lazareva, O.F.; Smirnova, A.A.; Bagozkaja, M.S.; Zorina, Z.A.; Rayevsky, V.V.; Wasserman, E.A. |
| Title |
Transitive responding in hooded crows requires linearly ordered stimuli |
Type |
Journal Article |
| Year |
2004 |
Publication |
Journal of the experimental analysis of behavior |
Abbreviated Journal |
J Exp Anal Behav |
| Volume |
82 |
Issue |
1 |
Pages |
1-19 |
| Keywords |
Animals; *Association; Cognition/physiology; Crows; Discrimination (Psychology); *Discrimination Learning; Feedback; Reinforcement (Psychology); Visual Perception/physiology |
| Abstract |
Eight crows were taught to discriminate overlapping pairs of visual stimuli (A+ B-, B+ C-, C+ D-, and D+ E-). For 4 birds, the stimuli were colored cards with a circle of the same color on the reverse side whose diameter decreased from A to E (ordered feedback group). These circles were made available for comparison to potentially help the crows order the stimuli along a physical dimension. For the other 4 birds, the circles corresponding to the colored cards had the same diameter (constant feedback group). In later testing, a novel choice pair (BD) was presented. Reinforcement history involving stimuli B and D was controlled so that the reinforcement/nonreinforcement ratios for the latter would be greater than for the former. If, during the BD test, the crows chose between stimuli according to these reinforcement/nonreinforcement ratios, then they should prefer D; if they chose according to the diameter of the feedback stimuli, then they should prefer B. In the ordered feedback group, the crows strongly preferred B over D; in the constant feedback group, the crows' choice did not differ significantly from chance. These results, plus simulations using associative models, suggest that the orderability of the postchoice feedback stimuli is important for crows' transitive responding. |
| Address |
Institute of Higher Nervous Activity, Moscow State University. olga-lazareva@uiowa.edu |
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English |
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0022-5002 |
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| Notes |
PMID:15484868 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
612 |
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| Author |
Kaminski, J.; Call, J.; Tomasello, M. |
| Title |
Body orientation and face orientation: two factors controlling apes' behavior from humans |
Type |
Journal Article |
| Year |
2004 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
7 |
Issue |
4 |
Pages |
216-223 |
| Keywords |
Animals; *Attention; *Behavior, Animal; Cognition; *Concept Formation; Face; Facial Expression; Female; Fixation, Ocular; Hominidae/*psychology; Humans; Male; *Nonverbal Communication; *Orientation; Pan paniscus/psychology; Pan troglodytes/psychology; Pongo pygmaeus/psychology; *Posture; Social Perception; Species Specificity |
| Abstract |
A number of animal species have evolved the cognitive ability to detect when they are being watched by other individuals. Precisely what kind of information they use to make this determination is unknown. There is particular controversy in the case of the great apes because different studies report conflicting results. In experiment 1, we presented chimpanzees, orangutans, and bonobos with a situation in which they had to request food from a human observer who was in one of various attentional states. She either stared at the ape, faced the ape with her eyes closed, sat with her back towards the ape, or left the room. In experiment 2, we systematically crossed the observer's body and face orientation so that the observer could have her body and/or face oriented either towards or away from the subject. Results indicated that apes produced more behaviors when they were being watched. They did this not only on the basis of whether they could see the experimenter as a whole, but they were sensitive to her body and face orientation separately. These results suggest that body and face orientation encode two different types of information. Whereas face orientation encodes the observer's perceptual access, body orientation encodes the observer's disposition to transfer food. In contrast to the results on body and face orientation, only two of the tested subjects responded to the state of the observer's eyes. |
| Address |
Max Planck Institute for Evolutionary Anthropology, Deutscher Plaz 6, 04103 Leipzig, Germany. kaminski@eva.mpg.de |
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English |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
1435-9448 |
ISBN |
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| Notes |
PMID:15034765 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2538 |
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| Author |
Schwab, C.; Huber, L. |
| Title |
Obey or not obey? Dogs (Canis familiaris) behave differently in response to attentional states of their owners |
Type |
Journal Article |
| Year |
2006 |
Publication |
Journal of Comparative Psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
| Volume |
120 |
Issue |
3 |
Pages |
169-175 |
| Keywords |
Animals; *Attention; Awareness; *Bonding, Human-Pet; *Cooperative Behavior; Cues; Dogs/*psychology; Humans; Motivation; *Nonverbal Communication; Social Perception; *Speech Perception; *Verbal Behavior |
| Abstract |
Sixteen domestic dogs (Canis familiaris) were tested in a familiar context in a series of 1-min trials on how well they obeyed after being told by their owner to lie down. Food was used in 1/3 of all trials, and during the trial the owner engaged in 1 of 5 activities. The dogs behaved differently depending on the owner's attention to them. When being watched by the owner, the dogs stayed lying down most often and/or for the longest time compared with when the owner read a book, watched TV, turned his or her back on them, or left the room. These results indicate that the dogs sensed the attentional state of their owners by judging observable behavioral cues such as eye contact and eye, head, and body orientation. |
| Address |
Department for Behavior, Neurobiology and Cognition, University of Vienna, Vienna, Austria. cpriberskyschwab@yahoo.de |
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English |
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Edition |
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| ISSN |
0735-7036 |
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Conference |
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| Notes |
PMID:16893253 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
4961 |
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| Author |
Crystal, J.D. |
| Title |
Systematic nonlinearities in the perception of temporal intervals |
Type |
Journal Article |
| Year |
1999 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
| Volume |
25 |
Issue |
1 |
Pages |
3-17 |
| Keywords |
Animals; *Attention; Awareness; Discrimination Learning; Male; Neural Networks (Computer); *Nonlinear Dynamics; Rats; Rats, Sprague-Dawley; Sensory Thresholds; *Time Perception |
| Abstract |
Rats judged time intervals in a choice procedure in which accuracy was maintained at approximately 75% correct. Sensitivity to time (d') was approximately constant for short durations 2.0-32.0 s with 1.0- or 2.0-s spacing between intervals (n = 5 in each group, Experiment 1), 2.0-50.0 s with 2.0-s spacing (n = 2, Experiment 1), and 0.1-2.0 s with 0.1- or 0.2-s spacing (n = 6 in each group, Experiment 2). However, systematic departures from average sensitivity were observed, with local maxima in sensitivity at approximately 0.3, 1.2, 10.0, 24.0, and 36.0 s. Such systematic departures from an approximately constant d' are predicted by a connectionist theory of time with multiple oscillators and may require a modification of the linear timing hypothesis of scalar timing theory. |
| Address |
Department of Psychology, Brown University, USA. jdcrys@facstaff.wm.edu |
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English |
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| ISSN |
0097-7403 |
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| Notes |
PMID:9987854 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2776 |
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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 |
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English |
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0272-4995 |
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| Notes |
PMID:9854439 |
Approved |
no |
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refbase @ user @ |
Serial |
252 |
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| 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 |
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English |
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0022-5002 |
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| Notes |
PMID:7714447 |
Approved |
no |
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refbase @ user @ |
Serial |
256 |
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| Author |
Kaiser, D.H.; Zentall, T.R.; Neiman, E. |
| Title |
Timing in pigeons: effects of the similarity between intertrial interval and gap in a timing signal |
Type |
Journal Article |
| Year |
2002 |
Publication |
Journal of experimental psychology. Animal behavior processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
| Volume |
28 |
Issue |
4 |
Pages |
416-422 |
| Keywords |
Animals; *Attention; Columbidae; *Conditioning, Operant; Discrimination Learning; Mental Recall; Probability Learning; *Reinforcement (Psychology); *Reinforcement Schedule; Retention (Psychology); Time Factors; *Time Perception/physiology |
| Abstract |
Previous research suggests that when a fixed interval is interrupted (known as the gap procedure), pigeons tend to reset memory and start timing from 0 after the gap. However, because the ambient conditions of the gap typically have been the same as during the intertrial interval (ITI), ambiguity may have resulted. In the present experiment, the authors found that when ambient conditions during the gap were similar to the ITI, pigeons tended to reset memory, but when ambient conditions during the gap were different from the ITI, pigeons tended to stop timing, retain the duration of the stimulus in memory, and add to that time when the stimulus reappeared. Thus, when the gap was unambiguous, pigeons timed accurately. |
| Address |
Department of Psychology, East Carolina University, Greenville, North Carolina 27858, USA. kaiserd@mail.ecu.edu |
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English |
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0097-7403 |
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| Notes |
PMID:12395499 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
238 |
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| Author |
Zentall, T.R. |
| Title |
Timing, memory for intervals, and memory for untimed stimuli: the role of instructional ambiguity |
Type |
Journal Article |
| Year |
2005 |
Publication |
Behavioural processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
70 |
Issue |
3 |
Pages |
209-222 |
| Keywords |
Animals; *Attention; Columbidae; *Discrimination Learning; *Memory, Short-Term; Practice (Psychology); Reinforcement Schedule; *Retention (Psychology); *Time Perception |
| Abstract |
Theories of animal timing have had to account for findings that the memory for the duration of a timed interval appears to be dramatically shorted within a short time of its termination. This finding has led to the subjective shortening hypothesis and it has been proposed to account for the poor memory that animals appear to have for the initial portion of a timed interval when a gap is inserted in the to-be-timed signal. It has also been proposed to account for the poor memory for a relatively long interval that has been discriminated from a shorter interval. I suggest here a simpler account in which ambiguity between the gap or retention interval and the intertrial interval results in resetting the clock, rather than forgetting the interval. The ambiguity hypothesis, together with a signal salience mechanism that determines how quickly the clock is reset at the start of the intertrial interval can account for the results of the reported timing experiments that have used the peak procedure. Furthermore, instructional ambiguity rather than memory loss may account for the results of many animal memory experiments that do not involve memory for time. |
| Address |
Department of Psychology, University of Kentucky, 202B Kastle Hall, 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:16095851 |
Approved |
no |
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refbase @ user @ |
Serial |
222 |
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| Author |
Hauber, M.E.; Pearson, H.E.; Reh, A.; Merges, A. |
| Title |
Discrimination between host songs by brood parasitic brown-headed cowbirds ( Molothrus ater) |
Type |
Journal Article |
| Year |
2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
5 |
Issue |
3 |
Pages |
129-137 |
| Keywords |
Animals; *Auditory Perception; *Discrimination Learning; Female; Male; Sexual Behavior; *Songbirds; *Vocalization, Animal |
| Abstract |
Songbirds can learn both to produce and to discriminate between different classes of acoustic stimuli. Varying levels of auditory discrimination may improve the fitness of individuals in certain ecological and social contexts and, thus, selection is expected to mold the cognitive abilities of different species according to the potential benefits of acoustic processing. Although fine-scale auditory discrimination of conspecific songs and calls has been frequently reported for brood parasitic brown-headed cowbirds ( Molothrus ater), it remains unclear why and how they perceive differently the songs of their many host species. Using habituation-dishabituation paradigms and measuring behavioral and physiological (heart-rate) responses, we found that captive female cowbirds consistently discriminated between songs of two host species, the song sparrow ( Melospiza melodia) and the red-winged blackbird ( Agelaius phoeniceus). Playback experiments with stimuli composed of con-specific followed by heterospecific vocalizations in the field also demonstrated discrimination between these heterospecific songs even though cowbirds were not attracted to playbacks of either host species' songs alone. Our results do not directly support a nest-searching function of heterospecific song discrimination by cowbirds and are most consistent with a function of the parasites' avoidance of attacks by their aggressive hosts. These data demonstrate discrimination between heterospecific vocalizations by brown-headed cowbirds and add a novel dimension to the already expansive auditory perceptual abilities of brood parasitic species and other songbirds. |
| Address |
Field Neurobiology and Behavior, Cornell, University, Ithaca, NY 14853, USA. hauberm@socrates.berkeley.edu |
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English |
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1435-9448 |
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| Notes |
PMID:12357285 |
Approved |
no |
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Equine Behaviour @ team @ |
Serial |
2600 |
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