NDLI: Middle Response Scale Options are Inappropriate for Ideal Point Scales

Content Provider	Springer Nature Link
Author	Dalal, Dev K. Carter, Nathan T. Lake, Christopher J.
Copyright Year	2013
Abstract	The purpose of this study is to provide a theoretical rationale for the inappropriateness of middle response options on the response scales offered on ideal point scales, and to provide empirical support for this argument to assist ideal point scale development.The same ideal point scale was administered in three quasi-experimental groups varying only in the response scale offered: the three groups received either a four-, five-, or six-option response scale. An ideal point Item Response Theory model, the Generalized Graded Unfolding Model (GGUM), was fit to the response data, and model-data fit was compared across conditions.Responses from the four- and six-option conditions were fit well by the GGUM, but responses from the five-option condition were not fit well.Despite the scale being constructed to follow the tenets of ideal point responding, the GGUM was unable to provide a reasonable probabilistic account of responding when the response scale contained a middle option. The authors find support for the argument that an odd-numbered response scale does not match the principles of ideal point responding, and can actually result in misspecifying the underlying response process.Although a growing body of research has suggested that attitude and personality measurement is best conceptualized under the assumptions of ideal point responding, little practical advice has been given to researchers or practitioners regarding scale creation. This was the first study to theoretically and empirically assess the response scale on ideal point scales, and offer guidance for constructing ideal point scales.
Starting Page	463
Ending Page	478
Page Count	16
File Format	PDF
ISSN	08893268
Journal	Journal of Business and Psychology
Volume Number	29
Issue Number	3
e-ISSN	1573353X
Language	English
Publisher	Springer US
Publisher Date	2013-09-25
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Item Response Theory Measurement Ideal point measurement Survey research Industrial, Organisational and Economic Psychology Community and Environmental Psychology Personality and Social Psychology Business/Management Science Social Sciences
Content Type	Text
Resource Type	Article
Subject	Business and International Management Applied Psychology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
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