| Records |
| Author |
Zentall, T.R; Hogan, D.E. |
| Title |
Key pecking in pigeons produced by pairing keylight with inaccessible grain |
Type |
Journal Article |
Year  |
1975 |
Publication |
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Abbreviated Journal |
J Exp Anal Behav |
| Volume |
23 |
Issue |
2 |
Pages |
199-206 |
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| Abstract |
In Experiment I, keylight was paired with inaccessible grain delivery (under two conditions of keylight intensity) to determine if autoshaping would occur in the absence of primary reinforcement. In Experiment II, the procedure was repeated with accessible grain, for comparison. In Experiment III, the procedures were repeated with explicitly unpaired presentations of keylight and either inaccessible or accessible grain. The results indicated that key pecking occurred as quickly in the presence of keylight pairings with inaccessible grain as with accessible grain, though (except for one bird) key pecking was not maintained with inaccessible grain. Furthermore, compared to the dim keylight, the bright keylight greatly suppressed key pecking when paired with inaccessible grain, and reduced the rate of key pecking when paired with accessible grain. Little key pecking occurred in groups exposed to explicitly unpaired presentations of keylight (whether bright or dim) and grain (whether accessible or inaccessible). When the birds in Experiment III were retested with explicitly paired presentations of keylight and grain, little key pecking was observed, suggesting suppressive effects of prior explicitly unpaired presentations. It is suggested that the effects of key-brightness manipulation were produced by the association of grain with cues other than the response key, or by distraction produced by partial illumination of the grain hopper. |
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0022-5002 |
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| Notes |
PMID:16811840 |
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no |
| Call Number |
refbase @ user @ |
Serial |
273 |
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| Author |
Zentall, S.S.; Zentall, T.R. |
| Title |
Activity and task performance of hyperactive children as a function of environmental stimulation |
Type |
Journal Article |
| Year |
1976 |
Publication |
Journal of consulting and clinical psychology |
Abbreviated Journal |
J Consult Clin Psychol |
| Volume |
44 |
Issue |
5 |
Pages |
693-697 |
| Keywords |
Achievement; Acoustic Stimulation; *Arousal; Auditory Perception; Child; Humans; Hyperkinesis/*etiology; Photic Stimulation; Visual Perception |
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0022-006X |
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| Notes |
PMID:965541 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
272 |
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| Author |
Zentall, S.S.; Zentall, T.R.; Barack, R.C. |
| Title |
Distraction as a function of within-task stimulation for hyperactive and normal children |
Type |
Journal Article |
| Year |
1978 |
Publication |
Journal of learning disabilities |
Abbreviated Journal |
J Learn Disabil |
| Volume |
11 |
Issue |
9 |
Pages |
540-548 |
| Keywords |
*Attention; Child; Child, Preschool; Color Perception; Female; Humans; Hyperkinesis/*psychology; Male; Motor Skills; *Task Performance and Analysis; Visual Perception |
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0022-2194 |
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| Notes |
PMID:731119 |
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no |
| Call Number |
refbase @ user @ |
Serial |
270 |
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| Author |
Zentall, T.R.; Hogan, D.E.. |
| Title |
Same/different concept learning in the pigeon: the effect of negative instances and prior adaptation to transfer stimuli |
Type |
Journal Article |
| Year |
1978 |
Publication |
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Abbreviated Journal |
J Exp Anal Behav |
| Volume |
30 |
Issue |
2 |
Pages |
177-186 |
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| Abstract |
Pigeons were trained on a matching-to-sample or oddity-from-sample task with shapes (circle and plus). Half of each group was exposed to “negative instance” trials i.e., for matching birds, neither comparison key matched the sample, and for oddity birds both comparison keys matched the sample. When all birds were transferred to a new task involving colors (red and green), nonshifted birds (transferred from matching to matching, or oddity to oddity) performed significantly better than shifted birds (transferred from matching to oddity, or oddity to matching), but only if they had experienced negative instances of the training concept. When all birds were exposed to negative instances of the transfer task and then transferred to a new color task (yellow and blue), dramatic transfer effects were observed. The effect of pre-exposure to the yellow and blue colors, in order to reduce transfer-stimulus novelty, had a minor effect on transfer. |
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0022-5002 |
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| Notes |
PMID:16812097 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
271 |
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| 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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| ISSN |
0002-9556 |
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| Notes |
PMID:532834 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
269 |
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| Author |
Zentall, T.R.; Hogan, D.E.; Edwards, C.A.; Hearst, E. |
| Title |
Oddity learning in the pigeon as a function of the number of incorrect alternatives |
Type |
Journal Article |
| Year |
1980 |
Publication |
Journal of experimental psychology. Animal behavior processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
| Volume |
6 |
Issue |
3 |
Pages |
278-299 |
| Keywords |
Animals; Choice Behavior; *Color Perception; Columbidae; *Discrimination Learning |
| Abstract |
Pigeons' rate of learning a two-color oddity task increased as a function of the number of incorrect alternatives from 2 to 24 in Experiments 1, 2, and 3. In general, pigeons that were transferred from many-incorrect-alternative to two-incorrect-alternative oddity performed better than controls, but considerably below baseline (Experiments 2 and 3). In Experiment 4, pigeons showed no unconditioned tendency to peck the odd stimulus among 24 incorect alternatives, when pecks were nondifferentially reinforced, and in Experiment 5, when this procedure was preceded by oddity training, a progressive drop in odd-stimulus pecking was found. In Experiment 6, pigeons exposed to a nine-stimulus array in which the odd stimulus appeared (a) in the center or (b) separate from the array learned faster than when the odd stimulus was at the edge. This outcome suggests ththe figure-ground relation between the odd stimulus and the incorrect alternatives plays a role in the facilitation produced by increasing the number of incorrect alternatives but that poor performance on the standard, three-alternative oddity task appears to be due to center-odd trials which provide a difficult size or number discrimination. |
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0097-7403 |
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| Notes |
PMID:7391753 |
Approved |
no |
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refbase @ user @ |
Serial |
268 |
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| Author |
Henning, J.M.; Zentall, T.R. |
| Title |
Imitation, social facilitation, and the effects of ACTH 4-10 on rats' bar-pressing behavior |
Type |
Journal Article |
| Year |
1981 |
Publication |
The American journal of psychology |
Abbreviated Journal |
Am J Psychol |
| Volume |
94 |
Issue |
1 |
Pages |
125-134 |
| Keywords |
Adrenocorticotropic Hormone/*pharmacology; Animals; Conditioning, Operant/*drug effects; Dose-Response Relationship, Drug; Extinction, Psychological/drug effects; Imitative Behavior/*drug effects; Male; Peptide Fragments/*pharmacology; Rats; *Social Facilitation |
| Abstract |
The effects of ACTH 4-10 on rats' imitation learning was examined during the acquisition and extinction of a bar-press response for water reinforcement. Rats were exposed to either a bar-pressing conspecific (OB), an experimentally naive conspecific (ON), or an empty box (OE) during bar-press acquisition. In a factorial design, each rat was then exposed to one of the same three conditions during extinction. An 80 mcg dose of ACTH 4-10 was administered to half of the rats in each group prior to observation. Performance differences during acquisition were generally small, but significant performance differences during extinction were found. Social facilitation was indicated by the finding that rats extinguished in the presence of a conspecific exhibited significantly greater resistance to extinction than rats extinguished in the presence of an empty box. An imitation effect was also found. Rats that observed a bar-pressing conspecific during both acquisition and extinction (group OB-OB) showed significantly greater resistance top extinction than did groups OB-ON, CB-OE, or OE-OE. There were no significant effects of the hormone, however, relative to saline controls. |
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0002-9556 |
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| Notes |
PMID:6263117 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
267 |
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| Author |
Zentall, S.S.; Zentall, T.R. |
| Title |
Optimal stimulation: a model of disordered activity and performance in normal and deviant children |
Type |
Journal Article |
| Year |
1983 |
Publication |
Psychological bulletin |
Abbreviated Journal |
Psychol Bull |
| Volume |
94 |
Issue |
3 |
Pages |
446-471 |
| Keywords |
*Arousal; Attention Deficit Disorder with Hyperactivity/*psychology; Autistic Disorder/*psychology; Behavior Therapy; Child; Humans |
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0033-2909 |
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| Notes |
PMID:6657825 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
264 |
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| Author |
Hogan, D.E.; Zentall, T.R.; Pace, G. |
| Title |
Control of pigeons' matching-to-sample performance by differential sample response requirements |
Type |
Journal Article |
| Year |
1983 |
Publication |
The American journal of psychology |
Abbreviated Journal |
Am J Psychol |
| Volume |
96 |
Issue |
1 |
Pages |
37-49 |
| Keywords |
Animals; Association; *Color Perception; Columbidae; Cues; *Discrimination Learning; Reinforcement Schedule; Time Factors |
| Abstract |
Pigeons were trained on a matching-to-sample task in which sample hue and required sample-specific observing behavior provided redundant, relevant cues for correct choices. On trials that involved red and yellow hues as comparison stimuli, a fixed-ratio 16 schedule (FR 16) was required to illuminate the comparisons when the sample was red, and a differential-reinforcement-of-low-rates 3-sec schedule (DRL 3-sec) was required when the sample was yellow. On trials involving blue and green hues as comparison stimuli, an FR 16 schedule was required when the sample was blue and a DRL 3-sec schedule was required when the sample was green. For some pigeons, a 0-sec delay intervened between sample offset and comparison onset, whereas other pigeons experienced a random mixture of 0-sec and 2-sec delay trials. Test trial performance at 0-sec delay indicated that sample-specific behavior controlled choice performance considerably more than sample hue did. Test performance was independent of whether original training involved all 0-sec delay trials or a mixture of 0-sec and 2-sec delays. Sample-specific observing response requirements appear to facilitate pigeons' matching-to-sample performance by strengthening associations between the observing response and correct choice. |
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0002-9556 |
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| Notes |
PMID:6859346 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
265 |
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| Author |
Nallan, G.B.; Pace, G.M.; McCoy, D.F.; Zentall, T.R. |
| Title |
The role of elicited responding in the feature-positive effect |
Type |
Journal Article |
| Year |
1983 |
Publication |
The American journal of psychology |
Abbreviated Journal |
Am J Psychol |
| Volume |
96 |
Issue |
3 |
Pages |
377-390 |
| Keywords |
Animals; Color Perception; Columbidae; *Discrimination (Psychology); Male; Practice (Psychology); Reinforcement (Psychology); Time Factors |
| Abstract |
Hearst and Jenkins proposed in 1974 that elicited responding accounts for the feature-positive effect. To test this position, pigeons were exposed to a feature-positive or feature-negative discrimination between successively presented displays--one consisted of a red and a green response key and the other consisted of two green response keys. There were four main conditions: 5-5 (5-sec trials, 5-sec intertrial intervals), 5-30, 30-30, and 30-180. Conditions 5-30 and 30-180 should produce the largest amount of elicited responding, and therefore the largest feature-positive effects. A response-independent bird was yoked to each response-dependent bird to allow direct assessment of the amount of elicited responding generated by each condition. Contrary to the predictions by Hearst and Jenkins's theory, response-dependent birds showed large feature-positive effects in each condition. The largest feature-positive effect was obtained in condition 5-5. Response-independent birds produced similar results, but manifested low response rates. |
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0002-9556 |
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| Notes |
PMID:6650707 |
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no |
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refbase @ user @ |
Serial |
266 |
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