論文

査読有り
2012年8月

Psychological Distance Between Categories in the Likert Scale: Comparing Different Numbers of Options

EDUCATIONAL AND PSYCHOLOGICAL MEASUREMENT
  • Takafumi Wakita
  • ,
  • Natsumi Ueshima
  • ,
  • Hiroyuki Noguchi

担当区分
筆頭著者
72
4
開始ページ
533
終了ページ
546
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1177/0013164411431162
出版者・発行元
SAGE PUBLICATIONS INC

This study examined whether the number of options in the Likert scale influences the psychological distance between categories. The most important assumption when using the Likert scale is that the psychological distance between options is equal. The authors proposed a new algorithm for calculating the scale values of options by applying item response theory and the ideas of Wakita to reveal the influence of the number of categories. Three types of questionnaires that were composed of the same items, but used different numbers of options to assess these items (specifically, 4-, 5-, and 7-point scales), were completed by 722 undergraduate students. The results indicated that the number of options influenced the psychological distance between options, particularly for the 7-point scale. This influence was revealed only by the authors' algorithm; descriptive statistics and coefficients of reliability did not show that the number of options had a prominent influence. The importance of the number of options and the new algorithm are discussed.

Web of Science ® 被引用回数 : 49

リンク情報
DOI
https://doi.org/10.1177/0013164411431162
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000306143600001&DestApp=WOS_CPL

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