This volume of working papers in psycholinguistics, from the "MITA Psycholinguistics Circle", contains the following articles: "Some Problems in the Acquisition of Derived Nouns" (Mika Endo); "World Knowledge in Children's Sentence Comprehension" (Yuki Hirose); "Examining the Including and Excluding Roles of Positive Evidence: A Study of a Case Where L2/L1 Grammar Intersects" (Midori Inaba); "Parsing as a Process of Applying I-Language Modules: A Case Study Based on the Processing of Quantifier Float Constructions in Japanese" (Yasuo Kaneko); "Do Formulaic Utterances Cease to Be 'Chunks' When They Are Analyzed?" (Yasuko Kanno); "Are Subject Small Clauses Really Small Clauses?" (Miori Kubo); "The Performance of the Japanese Case Particles in Children's Speech: With Special References to "Ga" and "O" (Hiroko Miyata); and "On the Interpretation of the Past Tense and the Acquisition of English" (Keiko Sano). (VWL)