| Records |
| Author |
Urcuioli, P.J.; Zentall, T.R. |
| Title |
Retrospective coding in pigeons' delayed matching-to-sample |
Type |
Journal Article |
| Year |
1986 |
Publication |
Journal of experimental psychology. Animal behavior processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
| Volume |
12 |
Issue |
1 |
Pages |
69-77 |
| Keywords |
Animals; *Color Perception; Columbidae; *Discrimination Learning; *Form Perception; *Memory; *Mental Recall; Orientation; *Pattern Recognition, Visual; Retention (Psychology) |
| Abstract |
In this study we examined how coding processes in pigeons' delayed matching-to-sample were affected by the stimuli to be remembered. In Experiment 1, two groups of pigeons initially learned 0-delay matching-to-sample with identical comparison stimuli (vertical and horizontal lines) but with different sample stimuli (red and green hues or vertical and horizontal lines). Longer delays were then introduced between sample offset and comparison onset to assess whether pigeons were prospectively coding the same events (viz., the correct line comparisons) or retrospectively coding different events (viz., their respective sample stimuli). The hue-sample group matched more accurately and showed a slower rate of forgetting than the line-sample group. In Experiment 2, pigeons were trained with either hues or lines as both sample and comparison stimuli, or with hue samples and line comparisons or vice versa. Subsequent delay tests revealed that the hue-sample groups remembered more accurately and generally showed slower rates of forgetting than the line-sample groups. Comparison dimension had little or no effect on performance. Together, these data suggest that pigeons retrospectively code the samples in delayed matching-to-sample. |
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0097-7403 |
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| Notes |
PMID:3701260 |
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no |
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refbase @ user @ |
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263 |
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| Author |
Beaver, B.V. |
| Title |
Aggressive behavior problems |
Type |
Journal Article |
| Year |
1986 |
Publication |
The Veterinary clinics of North America. Equine practice |
Abbreviated Journal |
Vet Clin North Am Equine Pract |
| Volume |
2 |
Issue |
3 |
Pages |
635-644 |
| Keywords |
Affect; Aggression/*psychology; Animals; *Behavior, Animal; Dominance-Subordination; Fear; *Horses; Play and Playthings; Sexual Behavior, Animal; Social Environment |
| Abstract |
Accurate diagnosis of the cause of aggression in horses is essential to determining the appropriate course of action. The affective forms of aggression include fear-induced, pain-induced, intermale, dominance, protective, maternal, learned, and redirected aggressions. Non-affective aggression includes play and sex-related forms. Irritable aggression and hypertestosteronism in mares are medical problems, whereas genetic factors, brain dysfunction, and self-mutilation are also concerns. |
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0749-0739 |
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| Notes |
PMID:3492250 |
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no |
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refbase @ user @ |
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674 |
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| Author |
Keiper, R.R. |
| Title |
Social structure |
Type |
Journal Article |
| Year |
1986 |
Publication |
The Veterinary clinics of North America. Equine practice |
Abbreviated Journal |
Vet Clin North Am Equine Pract |
| Volume |
2 |
Issue |
3 |
Pages |
465-484 |
| Keywords |
Animal Communication; Animals; Animals, Domestic; Animals, Wild; Dominance-Subordination; Female; *Hierarchy, Social; Homing Behavior; *Horses; Male; Sexual Behavior, Animal; *Social Behavior; *Social Dominance |
| Abstract |
Socially feral horses live in stable social groups characterized by one adult male, a number of adult females, and their offspring up to 2 years of age. Extra males either live by themselves or with other males in bachelor groups. The bands occupy nondefended home ranges that often overlap. Many abnormal behaviors seen in domestic horses occur because some aspect of their normal social behavior cannot be carried out in captivity. |
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0749-0739 |
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PMID:3492240 |
Approved |
no |
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refbase @ user @ |
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675 |
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| Author |
Craig, J.V. |
| Title |
Measuring social behavior: social dominance |
Type |
Journal Article |
| Year |
1986 |
Publication |
Journal of animal science |
Abbreviated Journal |
J. Anim Sci. |
| Volume |
62 |
Issue |
4 |
Pages |
1120-1129 |
| Keywords |
Aggression; Agonistic Behavior; Animals; *Behavior, Animal; Cattle; Chickens; Competitive Behavior; Female; Horses; Male; *Social Dominance; Swine |
| Abstract |
Social dominance develops more slowly when young animals are kept in intact peer groups where they need not compete for resources. Learned generalizations may cause smaller and weaker animals to accept subordinate status readily when confronted with strangers that would be formidable opponents. Sexual hormones and sensitivity to them can influence the onset of aggression and status attained. After dominance orders are established, they tend to be stable in female groups but are less so in male groups. Psychological influences can affect dominance relationships when strangers meet and social alliances within groups may affect relative status of individuals. Whether status associated with agonistic behavior is correlated with control of space and scarce resources needs to be determined for each species and each kind of resource. When such correlations exists, competitive tests and agonistic behavior associated with gaining access to scarce resources can be useful to the observer in learning about dominance relationships rapidly. Examples are given to illustrate how estimates of social dominance can be readily attained and some strengths and weaknesses of the various methods. |
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0021-8812 |
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PMID:3519554 |
Approved |
no |
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refbase @ user @ |
Serial |
676 |
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| Author |
Cox Je, |
| Title |
Behaviour of the false rig: Causes and treatments |
Type |
Journal Article |
| Year |
1986 |
Publication |
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Abbreviated Journal |
Vet Record |
| Volume |
118 |
Issue |
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Pages |
353-356 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
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Serial |
995 |
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| Author |
Eisenmann V, |
| Title |
Comparative osteology of modern and fossil horses, half-asses and asses |
Type |
Book Chapter |
| Year |
1986 |
Publication |
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Abbreviated Journal |
In: Equids in the ancient world |
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Pages |
67-116 |
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from Professor Hans Klingels Equine Reference List |
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no |
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Serial |
1057 |
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| Author |
Eisenmann V, U.H.-P. |
| Title |
Identification and discrimination of Equus metapodials |
Type |
Book Chapter |
| Year |
1986 |
Publication |
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Abbreviated Journal |
In: Equids in the ancient world |
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Pages |
118-163 |
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from Professor Hans Klingels Equine Reference List |
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no |
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1065 |
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| Author |
George Jr M, R.O. |
| Title |
Mitochondrial DNA evolution in the genus Equus |
Type |
Journal Article |
| Year |
1986 |
Publication |
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Abbreviated Journal |
Molecular Biol Evol |
| Volume |
3 |
Issue |
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Pages |
535-546 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
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Serial |
1105 |
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| Author |
GRAHAM A et al, |
| Title |
An aerial survey of horses and other karge animals in Alice Springs and Gulf regions |
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Journal Article |
| Year |
1986 |
Publication |
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Abbreviated Journal |
Cons Comm North Terr Alice Springs Techn Rep |
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from Professor Hans Klingels Equine Reference List |
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no |
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Serial |
1123 |
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| Author |
Groves Cp, |
| Title |
The taxonomy, distribution and adaptations of recent equids |
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Journal Article |
| Year |
1986 |
Publication |
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Abbreviated Journal |
In: Equids in the ancient world 11-51 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
| Call Number |
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Serial |
1133 |
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