Variation in verbal morphology is a phenomenon which has been the object of linguistic research for a long time. Two competing sets of predictions have been put forth to account for the distribution of verbal inflections in learner language: The Aspect Hypothesis posits that learners predominantly use inflections to indicate categories of lexical…

A variety of types of evidence are examined to help determine the true nature of "deep structure" and what, if any, implications this has for linguistic theory as well as culture theory generally. The evidence accumulated over the past century on the nature of phonetic and phonemic systems is briefly discussed, and the following areas of…