Effects of a Limited Hold on Pigeons' Match-to-sample Performance Under Fixed-ratio Scheduling.

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Pigeons were trained on a zero-delay identity match-to-sample task. Experiment 1 started with every correct match reinforced with grain access and subsequent conditions include higher fixed-ratio values. Experiment 2 included the same fixed-ratio values as experiment 1 with and without a limited hold (LH) on the opportunity to select a comparison stimulus. Prior research suggested that trials after reinforcement would have an increased likelihood of error, and that these errors would be reduced in LH conditions. Results confirmed this expected error pattern and in most LH conditions errors were reduced early in the ratio.

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Cermak, Joseph Leland December 2005.

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  • Cermak, Joseph Leland

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Pigeons were trained on a zero-delay identity match-to-sample task. Experiment 1 started with every correct match reinforced with grain access and subsequent conditions include higher fixed-ratio values. Experiment 2 included the same fixed-ratio values as experiment 1 with and without a limited hold (LH) on the opportunity to select a comparison stimulus. Prior research suggested that trials after reinforcement would have an increased likelihood of error, and that these errors would be reduced in LH conditions. Results confirmed this expected error pattern and in most LH conditions errors were reduced early in the ratio.

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  • December 2005

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  • Feb. 15, 2008, 4:27 p.m.

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  • July 8, 2015, 2:43 p.m.

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Cermak, Joseph Leland. Effects of a Limited Hold on Pigeons' Match-to-sample Performance Under Fixed-ratio Scheduling., thesis, December 2005; Denton, Texas. (digital.library.unt.edu/ark:/67531/metadc4974/: accessed November 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .