Place, U. T. (1998c). Behaviourism and the evolution of language. In Man Cheung Chung (Ed.), Current Trends in History and Philosophy of Psychology Volume 2 (Chapter 9, pp. 55-61). British Psychological Society.
[Abstract]The view that linguistic competence is acquired and maintained according to the principle of selective operant reinforcement is defended, partly on grounds of evolutionary probability and the special nature of human environmental adaptation, and partly on the basis of two strands of empirical evidence: experimental evidence from studies of "verbal conditioning" and observational evidence of naturally-occurring verbal interactions in the work of discourse and conversation analysts.  But, since selective operant reinforcement is as much part of animal as it is of human learning, that principle by itself cannot explain why only humans have developed language and why apes can, at best, attain to the linguistic competence of a human two-year-old.
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Place, U. T. (1998e) Evidence for the role of operant reinforcement in the acquisition and maintenance of linguistic competence. Connexions, (4), 31-37.
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About the journal: Connexions - An online journal of cognitive science. ISSN 1368-3233 In the period 1997 - 2003 there appeared 6 issues. The journal is archived at www.keithfrankish.com/connexions/
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Place, U. T. (2000c). The role of the hand in the evolution of language. Psycoloquy, 11(7), January 23. www.cogsci.ecs.soton.ac.uk/cgi/psyc/newpsy?11.007
[Abstract]This article has four sections. Section I sets out four principles which should guide any attempt to reconstruct the evolution of an existing biological characteristic. Section II sets out thirteen principles specific to a reconstruction of the evolution of language. Section III sets out eleven pieces of evidence for the view that vocal language must have been preceded by an earlier language of gesture. Based on those principles and evidence, Section IV sets out seven proposed stages in the process whereby language evolved: (1) the use of mimed movement to indicate an action to be performed, (2) the development of referential pointing which, when combined with mimed movement, leads to a language of gesture, (3) the development of vocalisation, initially as a way of imitating the calls of animals, (4) counting on the fingers leading into (5) the development of symbolic as distinct from iconic representation, (6) the introduction of the practice of question and answer, and (7) the emergence of syntax as a way of disambiguating utterances that can otherwise be disambiguated only by gesture.
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