Association for Behavior Analysis International

The Association for Behavior Analysis International® (ABAI) is a nonprofit membership organization with the mission to contribute to the well-being of society by developing, enhancing, and supporting the growth and vitality of the science of behavior analysis through research, education, and practice.


First International Conference; Italy, 2001

Event Details

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Paper Session #104
Friday, November 30, 2001
3:00 PM–3:50 PM
White Hall
Area: EAB
Chair: Michael B. Ehlert (University of Guam)
Automated Shaping of Leverpress Duration in Rats: Differentiation Based on Single Responses and Response Samples
Domain: Applied Behavior Analysis
JAMES KOPP (University of Texas at Arlington)
Abstract: Three groups of rats were differentially reinforced for emitting leverpress responses that were successive approximations to a duration band of between 600 and 700 ms. For the animals in Groups 1 and 2 each response was reinforced if it fell within an interim band auromatically set by adding the running mean to the average deviation of the previous 10 responses. For the Group 3 animals each response was reinforced if it was greater than the previous response. The animals in all three groups emitted responses whose durations closely approximated the criterion band with median durations close to 600 ms. For Groups 1 and 2, however, the area of the distribution of response durations that included the 600 to 700 ms band (and thus controlled the percent of reinforced responses) was well below 50%. The area of the distribution for Group 3 narrowed to 600-700 ms along with the increase in reinforcement density to 50%, then widened again with no loss of reinforcers.
Shaping of Animal Behavior by Visual Imaging Technologies
Domain: Applied Behavior Analysis
LINDA J. PARROTT HAYES (University of Nevada, Reno), Nelson Publicover (University of Nevada, Reno), Kenneth W. Hunter (University of Nevada, Reno)
Abstract: Two shaping protocols, implemented using visual imaging technologies, were compared as to their relative effectiveness in bringing about a target locomotor performance in 6 mice. The first of these was a standard fixed-step protocol, the second was a percentile shaping schedule. The data are presented as time required to accomplish individual steps, or their equivalents, as well as the final target performance. The numbers and types of errors are also shown. All data were collected by the computer.



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