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Title: An Analysis of the Impact of Reinforcement on Behavioral Variability Across Multiple Dimensions
Contributor(s): Kong, Xiuyan Kitt (author); McEwan, James (author); Foster, Therese Mary (author); Bizo, Lewis  (author)
Publication Date: 2012
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Abstract: The independence of dimensions of operant responses by humans was investigated in two experiments using a computerized rectangle drawing task from Ross and Neuringer (2002). Variability on the dimensions of area, shape and location was required for reinforcement for one group (VAR); and variability was not required for the other (YOKE). For all three dimensions, U-values, a measure of variability, were higher for the VAR group than for YOKE group; and the number of trials that met the criteria for reinforcement was higher for the VAR group than for the YOKE group. In Experiment 2, reinforcement was contingent on variability on two dimensions regardless of variability on the third. Participants were divided into three groups; each group had one dimension that was not required to vary. U-values were higher for dimensions when reinforcement was contingent on varying shape and location, or area and location. However, U-values did not differ significantly across dimensions when reinforcement was contingent on varying just area and shape. The results of Experiment 1 and 2 are broadly consistent with those of Ross and Neuringer (2002). The importance of orthogonality of dimensions on this task will be discussed.
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): 170299 Cognitive Sciences not elsewhere classified
170199 Psychology not elsewhere classified
170112 Sensory Processes, Perception and Performance
HERDC Category Description: E3 Extract of Scholarly Conference Publication
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