1974
DOI: 10.1901/jeab.1974.22-483
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EFFECTS OF VARYING THE PERCENTAGE OF KEY ILLUMINATIONS PAIRED WITH FOOD IN A POSITIVE AUTOMAINTENANCE PROCEDURE1

Abstract: Three pigeons were exposed to a positive automaintenance procedure in which each trial began with a brief tone followed by the transillumination of a small central area of the response key for 10 sec. Key illumination was followed by food on 100%, 50%, 25%, 12.5%, and 0% of the trials. The effects depended on the dependent variable observed. The mean rate of responding during key illumination rapidly increased and then decreased slightly as the percentage of key illuminations paired with food increased. The nu… Show more

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Cited by 19 publications
(15 citation statements)
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“…But Gonzalez also used a complex procedure, yoked across several birds to reduce responding during the ITI, and this may have eliminated the CRF/PRF differences found here and by Gibbon et al (1980). Autoshaping studies that have compared within-subjects PRF and CRF schedules have reported no acquisition rate differences (Gonzalez, 1974;Perkins et al, 1975;Picker 76.24, p < .001]. In extinction, this preference for the CRF stimulus gave way to a preference for the PRF stimulus using the first two measures via a significant schedule x sessions interaction [F(4,24) = 3.65, p < .05, location of first peck; F(4,24) = 3.47, p < .05, percent trials with a peck], but no significant interaction was found for percent total responses.…”
Section: Phasementioning
confidence: 90%
“…But Gonzalez also used a complex procedure, yoked across several birds to reduce responding during the ITI, and this may have eliminated the CRF/PRF differences found here and by Gibbon et al (1980). Autoshaping studies that have compared within-subjects PRF and CRF schedules have reported no acquisition rate differences (Gonzalez, 1974;Perkins et al, 1975;Picker 76.24, p < .001]. In extinction, this preference for the CRF stimulus gave way to a preference for the PRF stimulus using the first two measures via a significant schedule x sessions interaction [F(4,24) = 3.65, p < .05, location of first peck; F(4,24) = 3.47, p < .05, percent trials with a peck], but no significant interaction was found for percent total responses.…”
Section: Phasementioning
confidence: 90%
“…Thus, the control of a significant variable rests in the subject's behavior and may be responsible for the latency reduction. The decreased latency may reflect an equilibrium point between : positive response tendencies generated by average shorter trial durations resulting from trials with a peck (Groves, 1974) and negative response tendencies resulting from decreased association of keylight and grain resulting from trials with a peck (Gonzales, 1974;Schwartz & Williams, 1972). Indirect support for this view may be obtained from the relative latencies.…”
Section: Discussionmentioning
confidence: 99%
“…The failure of the clock stimulus to produce more responding in the 96-and 192-sec IFIs may be a motivational issue related to density of reward or a question of attention to external cues. In the presence of predictable IFI durations, rats may not as readily associate external cues with food at low overall food densities (though this is not so in the case of unpredictable IFI durations; see Gibbon, Farrell, Locurto, Duncan, & Terrace, 1980;Gonzalez, 1974). Future experiments could assess these hypotheses more directly by increasing the food density after longer IFIs (96 and 192 sec), so that it.…”
Section: Theoretical Accountsmentioning
confidence: 99%