What’s the best method? Comparison of different short forms oft he Pathological Narcissism Inventory

Schürch, Eva; Morf, Carolyn C. (8 September 2015). What’s the best method? Comparison of different short forms oft he Pathological Narcissism Inventory. In: 14th Congress of the Swiss Psychological Society - "The future of psychology". Geneva, Switzerland. 08.-09.09.2015.

Recent research emphasizes the various facets of narcissism. As a consequence, newly developed questionnaires for narcissism have a large number of subscales and items. However, for the daily use in research and practice, short measures are crucial. In this study we compare different short forms of the Pathological Narcissism Questionnaire, a 54 item measure with seven subscales. In different samples (total N>2000) we applied different theoretical models to construct short forms of approximately 20 items. In particular, we compared IRT, item-total correlation, and factor loading based short forms and versions based on content validity and random selection. In all versions the original subscale structure was preserved. Results show that the short forms all have high correlations with the original version. Furthermore, correlations with criterion validation measures were comparable. We conclude that the item number can be reduced substantially without loosing information. Pros and cons of the different reduction methods are discussed.

Item Type:

Conference or Workshop Item (Poster)

Division/Institute:

07 Faculty of Human Sciences > Institute of Psychology
07 Faculty of Human Sciences > Institute of Psychology > Personality Psychology, Differential Psychology and Diagnostics

UniBE Contributor:

Schürch, Eva and Morf, Carolyn

Subjects:

100 Philosophy > 150 Psychology
300 Social sciences, sociology & anthropology > 370 Education

Language:

English

Submitter:

Karin Dubler

Date Deposited:

02 May 2016 15:11

Last Modified:

08 Mar 2019 08:07

URI:

https://boris.unibe.ch/id/eprint/79846

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