NASA-TLX指標間の相関の検討1 - 対比較は必要か？一. (Japanese)

Correlations among weighted workload (WWL) scores, simple average of six subscales (RTLX: Raw TLX) and adaptive weighted workload (AWWL) scores and, between weights and subscales (order) were investigated when each score was obtained after several tasks. In experiment 1 ,three levels of task difficulties were set in multi-attribute task battery. ^ ix tasks (self-paced and machine-paced (twice) mental arithmetic tasks, Raven progressive matrix test, embedded figures test, mirror tracing task) were administered in experiment 2. Results indicate that significantly high correlation coeflicients were obtained (Exp.l: WWL-RTLX .84, R-TLX-AWWL .96, WWL-AWWL .88. Exp.2: RTLX-WWL .95, RTLX-AWWL .98, WWL-A WWL .96). Correlation coefficients between weights and subscales were .73 (ns) in Exp.l and .83 (p<0.05) in Exp.2. As shown in other reports, the utility of RTLX and AWWL which do not need paired comparisons is suggested. Furthermore, A WWL may be more sensitive than RTLX. [ABSTRACT FROM AUTHOR]

多重課題の難易度を3段階に設定した実験1と6作業（セルフペースおよびマシンペース（2回） 暗算， レイブン• プログレッシブ• マトリックス• テスト， 埋め込み図形テスト， 鏡映描写） を用いた実験2に おいて，NASA-TLXの重み付け平均値（WWL) ， 下位尺度の単純平均値（RTLX) ， 適応重み付け平均 値（AWWL) の3つの指標間および重み係数と下位尺度（順位値） の相_ を検討した.その結果， 指標間 には非常に高い相関が得られ（実験1 :WWL-RTLX .84， RTLX-AWWL .96，WWL-AWWL .88.実 験2 : RTLX-WWL .95， RTLX-AWWL .98，WWL-AWWL .96)， 重み係数と下位尺度の相関は実験1 で.73 (似)， 実験2で.83 (P<0.05)となり， 一対比較を行わないRTLXとAWWLの有用性が示唆され， AWWLはRTLXよりも感度が高い可能性が示唆された. [ABSTRACT FROM AUTHOR]

Copyright of Japanese Journal of Ergonomics is the property of Japan Ergonomics Research Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)