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Facilitation of Learning of a Simultaneous Discrimination between Rotated Patterns by Bumblebees
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Perreault, M. J.; Plowright, C. M. S. – Learning and Motivation, 2009
The failure to discriminate between a pattern consisting of four orthogonal bars and the same pattern rotated by 45 degrees has been interpreted in the literature as evidence against pictorial representations in honeybees. This study determines whether prior training can facilitate the discrimination. In Experiment 1, one group of bumblebees was…
Descriptors: Entomology, Visual Discrimination, Prior Learning, Training
Effects of Stimulus Duration and Choice Delay on Visual Categorization in Pigeons
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Lazareva, Olga F.; Wasserman, Edward A. – Learning and Motivation, 2009
We [Lazareva, O. F., Freiburger, K. L., & Wasserman, E. A. (2004). "Pigeons concurrently categorize photographs at both basic and superordinate levels." "Psychonomic Bulletin and Review," 11, 1111-1117] previously trained four pigeons to classify color photographs into their basic-level categories (cars, chairs, flowers, or people) or into their…
Descriptors: Stimuli, Word Recognition, Classification, Animals
Associative Learning of Discrimination with Masked Stimuli
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Marcos, Jose L. – Learning and Motivation, 2007
Great controversy exists on whether associative learning occurs without awareness. In Experiment 1, 31 participants received discrimination training by repeated presentations of two stimulus sequences (S1[subscript A] right arrow S2[subscript A], and S1[subscript B] right arrow S2[subscript B]), S1 being a masked stimulus. S2 were imperative…
Descriptors: Stimuli, Reaction Time, Associative Learning, Visual Discrimination
Not All Same-Different Discriminations Are Created Equal: Evidence Contrary to a Unidimensional Account of Same-Different Learning
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Gibson, Brett M.; Wasserman, Edward A.; Cook, Robert G. – Learning and Motivation, 2006
In Experiment 1, we trained four pigeons to concurrently discriminate displays of 16 same icons (16S) from displays of 16 different icons (16D) as well as between displays of same icons (16S) from displays that contained 15 same icons and one different icon (15S:1D). The birds rapidly learned to discriminate 16S vs. 16D displays, but they failed…
Descriptors: Visual Discrimination, Animal Behavior, Visual Learning, Learning Processes