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Lexxicaの言語学者等による研究論文、学会発表のプレゼン資料などのページ。ワードエンジンの語彙測定のテスト理論（IRT/項目応答理論）、日本の英語教科書や教育の問題点など、ワードエンジンの基礎をなす科学や理論について、PDF形式で読むことができます。

研究論文

Japanese High School Textbooks: Help or Hindrance? Browne, C. (1998) Temple University Japan Working Papers in Applied Linguistics, 12, pp. 1-13.
高校の教科書：使える？使えない？
日本の高校の英語教科書における、読みやすさと使用語彙を分析。読みやすさについては適切である一方、極度に難解な語彙の使用が明らかになり、学習者や教師が訳文や辞書に頼らざるを得ないという実態が浮き彫りになった。チャールズ・ブラウン博士
Japanese EFL Reading Texts: How Readable Are They? Browne, C. (1996) Temple University Japan Working Papers in Applied Linguistics, 8, pp. 28-41.
日本の英語の教科書：どのくらい読みやすい？
日本の高校の英語教科書の難易度を分析。英語圏の大学の教科書等と、読みやすさと使用語彙に関して難易度を比較したところ、日本の英語教科書のほうが、ほとんどのネイティブ向け教科書より難しいということが明らかになった。チャールズ・ブラウン博士。
New Perspectives on CALL for Second and Foreign Language Classrooms Browne, C. and Fotos, S. (2004) Mahwah: NJ: Lawrence Erlbaum Associates.
本書は、語学教師、教師トレーナー、そして学習者がCALL（コンピュータ支援語学学習）を利用する上での可能な選択肢と、その基となる理論や研究を理解するための実用書である。本書は各章においてこれまでのCALL理論と研究をまとめ、第二言語および外国語学習の現場への実際的な応用について説明する。また、それらの応用例につき検証する。チャールズ・ブラウン博士、サンドラ・フォトス博士。

この本を購入する（英語）

Vocabulary Acquisition Through Reading, Writing, and Tasks: A Comparison Browne, C. (2003) Unpublished Doctoral Dissertation, Temple University Japan.
読み・書き・タスクによる語彙習得：比較
pushed output（Swain 1985）の効果について。新語彙の習得におけるpushed outputの効果と、input-based及びtask-basedアプローチを比較する。結果、学習者のレベルに関わらず、pushed output条件下ではるかに多くの単語が習得された。また、どの条件下でも、学習者の語彙サイズが習得単語数に大きく影響することが明らかになった。チャールズ・ブラウン博士。
To Push or Not to Push: A Vocabulary Research Question Browne, C. (2002) Aoyama Ronshu, Aoyama Gakuin University Press, Number 43, pp. 93-120.
Pushするか、Pushしないか：語彙研究におけるクエスチョン
この研究では、英語の語彙を理論上異なる3つの方法で学習させた。その方法とは1.extensive reading（多読）(Input-Hypothesis) 2. activity-based (Task-based) 3. その単語を使用し作文(Pushed OutputとDepth of Processing)の3つである。結果、学習者のレベルに関わらず、Pushed Output手法においてはるかに多くの単語が習得された。
CALL Lab Design 101: Proceed at Your Own Risk Browne, C. (2004) "Media no Ibunkakan Eikyoryoku", Aoyama Gakuin University Sokken Research Institute, pp. 1-28.
CALL Lab Design 101: 自分の責任で決断を！
「最新」モデルを購入してもすぐに時代遅れになるほどに、CALLの技術は日進月歩の発展を遂げています。それ故に、CALL研究室の管理者にとっては、いつ何を購入すべきかの決断が難しくなっています。この論文は、購入時に検討すべきポイントと、役に立つアドバイスを紹介し、最新技術を使用したい教師とCALL研究室の管理者との間のギャップを埋めることを目的としています。チャールズ・ブラウン博士。
The Development of CALL and Current Options Browne, C. and Fotos, S. (2004) in New Perspectives on CALL for Second and Foreign Language Classrooms (pp.3-14), Mahwah: NJ: Lawrence Erlbaum Associates.
CALL技術の発展と現在のオプション
一つの学問分野として成長を遂げているCALL。第二言語および外国語学習の現場におけるCALLについて。CALLの現状、CALLの未来についての研究やアイデアの紹介。チャールズ・ブラウン博士、サンドラ・フォトス博士。「New Perspectives on Call for Second Language Classrooms」より

Lexxicaの教授法を裏付ける学術研究

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