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The Learning Barrier: Moving from Innate to Learned Systems of CommunicationLanguage Evolution and Computation Research Unit Department of Linguistics, University of Edinburgh Human language is a unique ability. It sits apart from other systems of communication in two striking ways: it is syntactic, and it is learned. While most approaches to the evolution of language have focused on the evolution of syntax, this paper explores the computational issues that arise in shifting from a simple innate communication system to an equally simple one that is learned. Associative network learning within an observational learning paradigm is used to explore the computational difficulties involved in establishing and maintaining a simple learned communica tion system. Because Hebbian learning is found to be sufficient for this task, it is proposed that the basic computational demands of learning are unlikely to account for the rarity of even simple learned communication systems. Instead, it is the problem of *observing* that is likely to be cen tral in particular the problem of determining what meaning a signal is intended to convey.
Adaptive Behavior, Vol. 7, No. 3-4,
371-383 (1999) This article has been cited by other articles:
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