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Conceptualization in the pigeon: What do we know?
Author(s) -
Khallad Yacoub
Publication year - 2004
Publication title -
international journal of psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.75
H-Index - 62
eISSN - 1464-066X
pISSN - 0020-7594
DOI - 10.1080/00207590344000349
Subject(s) - conceptualization , psychology , categorization , cognitive psychology , transitive relation , variety (cybernetics) , perception , contingency , reflexivity , cognitive science , memorization , concept learning , social psychology , developmental psychology , epistemology , artificial intelligence , computer science , neuroscience , social science , philosophy , mathematics , combinatorics , sociology
This article reviews studies on conceptual behaviour in the pigeon that have been conducted over the past four decades. These studies reveal a variety of definitions and procedures employed in the assessment of this behaviour, a reflection of its multifaceted nature. Overall, pigeons have been found capable of categorizing a wide variety of static and moving natural and artificial stimuli. They have also demonstrated learning of abstract or relational concepts, even though such concepts seem to be more challenging. More recently, pigeons have also been shown to be capable of conceptualization as reflected in the ability to form functional or contingency classes (Lea, 1984), and some preliminary findings point to the possibility that pigeons can exhibit the more demanding equivalence classes (Sidman, 1990) that manifest themselves in the formal properties of reflexivity, symmetry, and transitivity emerging from conditional discriminations, when adequate procedures are employed. Available evidence now seems to suggest that functional and equivalence classes are closely related, but more work is needed to specify the nature of this relationship. At this point, it seems safe to conclude that language may not be necessary for conceptualization, including equivalence learning. Taken together, the findings of this review reveal learning abilities in the pigeon far beyond simple discrimination or categorization, although it is not yet well understood how this learning is achieved. Memorization of individual stimuli, featural analysis, and formation of prototypes have all been suggested as strategies utilized by pigeons in perceptual categorization tasks, while abstraction has been posited in explaining pigeons' relational concept learning. The reinforcement contingency has more recently been offered as a possible mechanism underlying equivalence learning. More broadly, the review illustrates how a hybrid of psychological and biological approaches can be employed in animal experimentation to tackle complex questions and enhance our understanding of behaviour and cognition.