Using Fine Grained Likert Scales in Web Surveys

Using Fine Grained Likert Scales in Web Surveys - Using...

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Using Fine-Grained Likert Scales in Web Surveys Key Words: Web survey, measurement, Likert scale, granularity, statistical power, simulation. Abstract Online surveys offer measurement possibilities that paper surveys do not. This study examines fine-grained Likert scales. Usual Likert items limit respondents to five or seven points on a scale. Fine-grained items let respondents select any point on the scale. The paper (1) shows how fine- grained scales can be implemented on Web-based surveys, (2) tests the effect of fine-grained scales on statistical power, and (3) presents data on respondents' use of fine-grained scales in practice. We conclude that the extra effort needed to implement fine-grained scales is worthwhile.
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Author Information: Kieran Mathieson Department of Decision and Information Sciences Oakland University Rochester, MI 49309-4493 Phone: 248 370 3507 Fax 248 370 4275 Email: mathieso@oakland.edu David P. Doane Department of Decision and Information Sciences Oakland University Rochester, MI 49309-4493 Phone: 248 370 4002 Fax 248 370 4275 Email: doane@oakland.edu
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Table of Contents: Using Fine-Grained Likert Scales in Web Surveys .......................................................... ............ 1 Key Words: ........................................................................................................... .......................... 1 Abstract ..................................................................................................................................... ...... 1 Table of Contents: ............................................................................................................ ............... 3 Background .............................................................................................................................. ....... 4 Figure 1. Paper-and-Pencil Likert Scale .......................................................... ........................ 4 Figure 2. Radio Button Likert Scale ................................................................... ...................... 4 Implementing Fine-Grained Items .......................................................................................... ......... 5 Figure 3. Initial State of a Fine-Grained Likert Scale ................................................................ 5 Figure 4. Clicked Fine-Grained Likert Scale ................................................... ......................... 5 Figure 5. HTML Code for a Scale .................................................................. .......................... 6 Figure 6. JavaScript for Storing Respondent's Choice ......................................................... .... 7 Figure 7. ASP Code Generating the Item ............................................................................. .... 7 Effects on Power .................................................................................................................. ........... 9 Figure 8. Power Curves for Different Sample Sizes
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This note was uploaded on 06/01/2008 for the course MBAC 6030 taught by Professor Seward during the Fall '07 term at Colorado.

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Using Fine Grained Likert Scales in Web Surveys - Using...

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