英語リスニング電子教材を対象とした眼球運動測定による学習者の主観難易度の推定

摘要

This paper proposes an estimation method of subjective difficulty of Web based English listening tests from Mahalanobis distance of users' eye movement characteristic parameters. The eye movements characteristics used to distinguish emotions were obtained by examinations of the 10 subjects (5 male, 5 female). The estimated subjective difficulty was measured time sequentially. So that, the periods of "ease" emotion and "difficulty" emotion were selected. The 6 eye movement characteristic parameters used for estimation of users' subjective difficulty it as follows: (a) average eye movement velocity (b) total direction of gaze X © total direction of gaze Y (d) standard deviation of total direction of gaze X (e) standard deviation of total direction of gaze Y (g) count of blinks. The coincidence rate of "ease" was 85.1% and "difficulty" was 87.5%.%本研究は，学習者が問題解決中に学習内容に対して主観 的に感じる「簡単」，「難しいj　いずれかの評価を主観難易 度と定義し，選択式英語リスニング電子教材を対象に，学 習者の一定時間の眼球運動の特徴量から主観難易度を推定 する手法について提案し、その有効性を検証した。本研究 により得られた結論は以下のとおりである。