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| International Paper Session - Stimulus Control |
| Monday, May 28, 2007 |
| 9:00 AM–10:20 AM |
| Del Mar AB |
| Area: EAB |
| Chair: Joshua A. Levine (University of North Texas) |
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| Exploring the Role of Sample Observing on Titrating Delays in a Matching-to-Sample Procedure with Pigeons. |
| Domain: Basic Research |
| JOSHUA A. LEVINE (University of North Texas), Brian D. Kangas (University of Florida), Manish Vaidya (University of North Texas) |
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| Abstract: Results from laboratory experiments suggest that increasing response requirements or time spent in the presence of sample stimuli facilitates acquisition of conditional discriminations. Results from other studies show the same operation also serves to facilitate performance in successive n-delay conditional discrimination tasks. However, the use of static delay matching-to-sample procedures and percent accuracy as the dependent measure have limited a precise understanding of the effects of these manipulations. In the current study, we implemented a titrating-delay matching-to-sample procedure which allows a more sensitive and unbounded measure of the effects of increased response or viewing requirements. In the context of this procedure, a within-subject comparison sought to compare the effects of response requirements and time spent in the presence of the sample stimuli. Results show that both manipulations influenced the value of the adjusted delay in these procedures. Preliminary analyses suggest that extended observing response requirements were more effective than controlled viewing opportunities. The results from this study should inform future research interested in the role of sample observing methods on delayed matching-to-sample. |
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| Delay Interval in Second-Order Matching-to-Sample. |
| Domain: Basic Research |
| MARIO SERRANO (Universidad de Guadalajara-Centro de Estudios e Investigaciones en Comportamiento), Emilio Ribes Iñesta (Universidad de Guadalajara-Centro de Estudios e Investigaciones en Comportamiento), Alfredo Lopez (Universidad Nacional Autonoma de Mexico - Iztacala), Gustavo Garcia (Universidad Franco Mexicana - Satellite) |
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| Abstract: Four groups of college students were exposed to a second-order matching-to-sample task and intramodal, extramodal and extradimensional transfer tests. In the training phase, for different groups sample and comparison stimuli were presented simultaneously or delayed from instructional or discriminative second-order stimuli. In transfer tests all stimuli were presented simultaneously. Acquisition of the conditional discrimination was reduced by discriminative second-order stimuli, but enhanced by the delay interval with instructional second-order stimuli. In transfer tests, the number of participants that showed consistent high percentage of correct responses was higher in the delay-instructional group, followed by groups simultaneous-discriminative, delay-discriminative, and simultaneous-instructional, in that order. The results are discussed in relation to previous experiments on both animal and human behavior under conditional discrimination situations. |
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| Delayed Matching-to-Sample and Equivalence in Typically Developed Children. |
| Domain: Basic Research |
| ERIK ARNTZEN (Akershus University College ), Torunn Lian (Glenne Senter Vestfold, Norway) |
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| Abstract: In an earlier study with adults as participants which included a series of four experiments with delayed matching to sample and equivalence showed that the participants even after long delays responded in accord with equivalence, while participants that were engaged in distracting tasks during the retention intervals did not have success on equivalence tests (Arntzen, 2006). We wanted to replicate the results in typically developed children. The purpose was also to study responding in accord with equivalence as function of different requirements of responses to sample stimulus, i.e., when there was no requirement of response to the sample, requirement of one response to the sample and requirement of n responses to the sample stimulus. |
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