Ghanbari, H., Mazaheri, M., Mishmast nehi, H. (2636). Application of Fuzzy System in Psychological Tests: Optimize the Number of Questions for WHOQOL-BREF. International Journal of Psychology (IPA), 9(2), 51-75.
Hamid Reza Ghanbari; Mehrdad Mazaheri; Hasan Mishmast nehi. "Application of Fuzzy System in Psychological Tests: Optimize the Number of Questions for WHOQOL-BREF". International Journal of Psychology (IPA), 9, 2, 2636, 51-75.
Ghanbari, H., Mazaheri, M., Mishmast nehi, H. (2636). 'Application of Fuzzy System in Psychological Tests: Optimize the Number of Questions for WHOQOL-BREF', International Journal of Psychology (IPA), 9(2), pp. 51-75.
Ghanbari, H., Mazaheri, M., Mishmast nehi, H. Application of Fuzzy System in Psychological Tests: Optimize the Number of Questions for WHOQOL-BREF. International Journal of Psychology (IPA), 2636; 9(2): 51-75.
Application of Fuzzy System in Psychological Tests: Optimize the Number of Questions for WHOQOL-BREF
1Department of psychology University of Sistan and Baluchestan
2Department of psychology Ferdowsi University of Mashhad & University of Sistan and Baluchestan
3Department of mathematics University of Sistan and Baluchestan
Receive Date: 03 September 2015,
Revise Date: 23 February 2019,
Accept Date: 15 January 2018
Abstract
The WHOQOL-BREF is one of the best known questionnaires for measuring the quality of life. It is currently available in more than 40 languages and has been used frequently in cross-cultural comparison studies on subjective well-being and quality of life studies. Some research shows that due to certaincultural biases Iranian respondentshave no tendency or willingness to responding some questions, more specially, question 21, in WHOQOL-BREF. The main aim of the current research was to use the ability and flexibility of fuzzy systems to analyse the WHOQOL-BREF questions to reduce some unclear or doubtful questions. A fuzzy system model proposes to diminish the errors that produce ambiguous concepts by not responding to certain biased questions.TheWHOQOL-BREEquestionnaire was analyzed and both the traditional model and the fuzzy model analyses were compared for results using fuzzy systems.As a result, question 21 was removed from the WHOQOL-BREF questionnaire used by the fuzzy system.
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