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Relative pitch perception is constrained by absolute pitch in songbirds ( Mimus, Molothrus, and Sturnus). Objects, categories, and discriminative stimuli. Cahiers de Psychologie Cognitive, 6, 483–500. Iterative and recursive behaviors in chimpanzees during problem solving: A new descriptive model inspired from the artificial intelligence approach. Song matching in the great tit ( Parus major): The effect of similarity and familiarity. Rumbaugh (Ed.), Language learning by a chimpanzee (pp. Language relevant object- and color-naming tasks. Animal Learning & Behavior, 11, 349–355.Įssock, S.
Counting behavior in rats in a simulated natural environment. Animal Learning & Behavior, 12, 409–413.ĭavis, H., & Bradford, S. Discrimination of the number three by a raccoon ( Procyon lotor). Animal Learning & Behavior, 4, 121–124.ĭavis, H. Two-choice conditional discrimination performance of pigeons as a function of reward expectancy, prechoice delay, and domesticity. Recognition of parents’ voices by young cliff swallows. Bandura (Ed.), Psychological modeling (pp. These findings are discussed in terms of his comprehension of the categories of color, shape, and material and as evidence of his competence in an exceptional (non-species-specific) communication code.īandura, A. Additional trials demonstrated that his responses were based upon the question being posed as well as the attributes of the objects. His accuracy was 69.7%–76.6% for pairs of familiar objects not used in training and 82.3%–85% for pairs involving objects whose combinations of colors, shapes, and materials were unfamiliar. The subject, Alex, replied with the correct English categorical label (“color,” “shape,” or “mah-mah” ) when asked “What’s same?” or “What’s different?” about pairs of objects that varied with respect to any combination of attributes. An African Grey parrot, previously taught to use vocal English labels to discriminate more than 80 different objects and to respond to questions concerning categorical concepts of color and shape, was trained and tested on relational concepts of same and different.
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