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CONTROL BY SAMPLE LOCATION IN PIGEONS' MATCHING TO SAMPLE
Author(s) -
Lionello Karen M.,
Urcuioli Peter J.
Publication year - 1998
Publication title -
journal of the experimental analysis of behavior
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.75
H-Index - 61
eISSN - 1938-3711
pISSN - 0022-5002
DOI - 10.1901/jeab.1998.70-235
Subject(s) - sample (material) , matching (statistics) , key (lock) , sample size determination , artificial intelligence , computer science , statistics , control sample , pattern recognition (psychology) , mathematics , computer security , biology , chemistry , food science , chromatography
Three experiments assessed the impact of sample location in pigeons' matching to sample. Experiments 1 and 2 demonstrated that after line or hue identity matching was acquired to high levels of accuracy with center‐key samples, varying sample location across the three keys disrupted performances. The drop in accuracy occurred following both zero‐delay and simultaneous training and was mostly confined to trials in which the sample appeared on a side key. Experiment 3 attempted to diminish control by location by training birds to match samples that could appear in any location prior to center‐key sample training and moving‐sample testing with another set of stimuli. In testing, all birds performed accurately on center‐sample trials and on side‐key sample trials in which the matching choice appeared on the center key. Accuracy was below chance, however, on side‐key sample trials in which the matching choice appeared on the other side key. One implication of the persistent control by sample location in the three‐key paradigm is that it precludes the possibility of symmetry because symmetry tests require a change in the locations at which samples and comparisons appear.