Argues that discoveries concerning the essential properties of whole categories of word concepts are critical to essentialist intuitions. Reviews studies demonstrating that words and concepts are not used in accordance with essentialism, concluding that since essentialism is not vindicated by ordinary word use, it fails to undermine the cognitive…

I show how a conversational process that takes simple, intuitively meaningful steps may be understood as a sophisticated computation that derives the richly detailed, complex representations implicit in our knowledge of language. To develop the account, I argue that natural language is structured in a way that lets us formalize grammatical…

Discusses second language acquisition, the importance of comprehensible input to this acquisition, and the inadequacy of the theory of language interference as an explanation for errors in second language speech. The role of the teacher in the language classroom and the "procedural syllabus" are described. (SED)