| Records |
| Author |
Nallan, G.B.; Pace, G.M.; McCoy, D.F.; Zentall, T.R. |
Title  |
Temporal parameters of the feature positive effect |
Type |
Journal Article |
| Year |
1979 |
Publication |
The American journal of psychology |
Abbreviated Journal |
Am J Psychol |
| Volume |
92 |
Issue |
4 |
Pages |
703-710 |
| Keywords |
Animals; Columbidae; Conditioning, Operant; *Discrimination Learning; Form Perception; Male; *Time Perception |
| Abstract |
Trial duration and intertrial interval duration were parametrically varied between groups of pigeons exposed to a discrimination involving the presence vs. the absence of a dot. Half the groups received the dot as the positive stimulus (feature positive groups) and half the groups received the dot as the negative stimulus (feature negative groups). Faster learning by the feature positive birds (feature positive effect) was found when the trial duration was short (5 sec) regardless of whether the intertrial interval was short (5 sec) or long (30 sec). No evidence for a feature positive effect was found when the trial duration was long (30 sec) regardless of the length of the intertrial interval (30 sec or 180 sec). The results suggest that short trial duration is a necessary condition for the occurrence of the feature positive effect, and neither intertrial interval nor trial duration/intertrial interval ratio are important for its occurrence. The suggestion that mechanisms underlying the feature positive effect and autoshaping might be similar was not supported by the present experiment since the trial duration/intertrial interval ration parameter appears to play an important role in autoshaping but not the feature positive effect. |
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| Language |
English |
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| ISSN |
0002-9556 |
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| Notes |
PMID:532834 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
269 |
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| Author |
JORDAN JW et al, |
| Title |
Summer diets of feral burros (Equus asinus) in Grand Canyon National Park, Arizona |
Type |
Journal Article |
| Year |
1979 |
Publication |
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Abbreviated Journal |
Symposium on the Ecology and Behavior of wild and feral Equids, Laramie |
| Volume |
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Issue |
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Pages |
15-22 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
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Serial |
1222 |
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| Author |
Gakahu Cg, |
| Title |
Strategies of feeding behavior in the Common zebra, Equus burchelli (Gray) in Amboseli National Park, Kenya (Abstract) |
Type |
Journal Article |
| Year |
1979 |
Publication |
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Abbreviated Journal |
Symposium on the Ecology and Behavior of wild and feral Equids, Laramie |
| Volume |
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Issue |
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Pages |
158 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
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Serial |
1100 |
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| Author |
Tschanz B, |
| Title |
Sozialverhalten beim Camarguepferd – Dokumentierverhalten bei Hengsten (Freilandaufnahmen) |
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| Year |
1979 |
Publication |
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Abbreviated Journal |
D 1284 Publ. Wiss. Film |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
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Serial |
1663 |
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| Author |
Asa Cs, |
| Title |
Sociosexual behavior in the domestic pony |
Type |
Conference Article |
| Year |
1979 |
Publication |
Symposium on the Ecology and Behavior of Wild and Feral Equids |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
59-70 |
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| Publisher |
Univ. of Wyoming. |
Place of Publication |
Laramie |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
| Call Number |
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Serial |
900 |
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| Author |
Asa, C.S.; Goldfoot, D.A.; Ginther, O.J. |
| Title |
Sociosexual behavior and the ovulatory cycle of ponies (Equus caballus) observed in harem groups |
Type |
Journal Article |
| Year |
1979 |
Publication |
Hormones and Behavior |
Abbreviated Journal |
Horm Behav |
| Volume |
13 |
Issue |
1 |
Pages |
49-65 |
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| Abstract |
Observations of sociosexual behavior of adult ponies, made on two harem groups (each comprised of one vasectomized male and three females), were correlated with follicular development and ovulation for a total of 15 cycles (minimum of 2 cycles per female). Mean cycle length (interovulatory interval) was found to be 19.7 days, with behavioral estrus lasting 7-8 days (5.5 days preovulatory; 2.3 days postovulatory). Estrous females typically showed increased frequencies of approaching and following the stallion, urinating, presenting, clitoral winking, and tail raising. Approaching and following the stallion appeared earlier and persisted longer than other estrous responses. Deviations from the modal estrous pattern included cycles with subestrus, continual estrus, behavioral estrus in the absence of ovulation, and displays of female mounting. Dominance tests revealed that a mare's status was unaffected by the phases of the estrous cycle. The presence of more than one estrous female affected the copulatory performance of both stallions, most notably in reduced latencies to first mount, intromission, and ejaculation, in spite of differences between the stallions in sexual vigor. Each stallion usually selected the dominant mare for copulation when there were multiple estrous females present, but mounts were not displayed exclusively to one female per test. The social testing situation made apparent the importance of use of space in sociosexual communication in this species, particularly in avoidance of the stallion by diestrous mares and standing alone or in proximity to him by estrous mares. |
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0018-506x |
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Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
5363 |
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| Author |
Penzhorn Bl, |
| Title |
Social organisation of the Cape Moutain Zebra Equus Z. Zebra in the Moutain Zebra National Park |
Type |
Journal Article |
| Year |
1979 |
Publication |
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Abbreviated Journal |
Koedoe |
| Volume |
22 |
Issue |
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Pages |
115-156 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
| Call Number |
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Serial |
1450 |
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| Author |
Wells, S.; von Goldschmidt-Rotschild, B. |
| Title |
Social behaviour and relationships in a herd of Camargue horses |
Type |
Journal Article |
| Year |
1979 |
Publication |
Z Tierpsychologie |
Abbreviated Journal |
Z Tierpsychologie |
| Volume |
49 |
Issue |
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Pages |
363-380. |
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Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
5107 |
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| Author |
Wells Sm, G.-R. |
| Title |
Social behaviour and relationship in a herd of Carmargue horses |
Type |
Journal Article |
| Year |
1979 |
Publication |
Zeitschrift für Tierpsychologie |
Abbreviated Journal |
Z. Tierpsychol. |
| Volume |
49 |
Issue |
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Pages |
363-380 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
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Serial |
1700 |
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| Author |
Sinclair, A.R.E. |
| Title |
Serengeti: Dynamics of an Ecosystem |
Type |
Book Whole |
| Year |
1979 |
Publication |
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Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2346 |
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