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Comments on an article by Patricia M. Greenfield which proposed that early child's development Broca's area may serve the dual function of coordinating object assembly and organizing the production of structured utterances. Differentiation of language production and high-level motor programming in the same cortical region; Description of the simulation framework for understanding motor behavior; Characteristics of the recursive auto-associative memory method.

Examples from Chinese, Thai, and Finnish illustrate why researchers cannot always be confident about the precise nature of the word unit. Understanding ambiguities regarding where a word begins and ends, and how to model word recognition when many derivations of a word are possible, is essential for universal theories of reading applied to both developing and expert readers [ABSTRACT FROM AUTHOR]

As the number of computational models of eye-movement control in reading increases, so too will their coverage and complexity. This will make their comparison and testing increasingly challenging. We argue here that there is a need to develop a methodology for constructing and evaluating such models, and outline aspects of a possible methodology. [ABSTRACT FROM AUTHOR]