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Title: Effects of Schedules of Reinforcement on Behavioural Variability
Contributor(s): Neshausen, Leanne (author); McEwan, James (author); Bizo, Lewis  (author)
Publication Date: 2012
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Abstract: As an extension of Boren, Moerschbaecher, & Whyte, (1978), Experiment 1 was a comparison of schedules of reinforcement on location variability. Hens worked in an operant chamber across five keys that were arranged horizontally. A peck to any key was equally effective. Interval schedules were yoked to ratio schedules. Eight schedules were examined: FR 40, FR 10, FI y-40, FI y-10, VR 40, VR 10, VI y-40 and VI y-10. Location variability was measured as the percentage of switching across keys from within trials, between trials (the reinforced peck location to the first peck location of the following trial), and the number of keys used. It was hypothesised that more variation would occur from schedules with large inter-reinforcer-intervals rather than short, and also that interval schedules would result in more variations than ratio schedules. Hypotheses were not up held, however a correlation of response rate and variability was found. In Experiment 2, six new hens worked on a series of (across session) incrementing DRL schedules, from DRL 0.5-sec to DRL 19.2-sec. Results found no correlation of response rate and variability. However, far more within trial switches were observed in Experiment 2 than Experiment 1, suggesting need for further study.
Publication Type: Conference Publication
Conference Name: 38th Annual Convention of the Association for Behavior Analysis International, Seattle, United States of America, 25th - 29th May, 2012
Source of Publication: Association for Behavior Analysis International 38th Annual Convention Program
Publisher: Association for Behavior Analysis International (ABAI)
Place of Publication: online
Field of Research (FOR): 170112 Sensory Processes, Perception and Performance
170299 Cognitive Sciences not elsewhere classified
170199 Psychology not elsewhere classified
HERDC Category Description: E3 Extract of Scholarly Conference Publication
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