Construct and Psychometric Properties of a New Version Quality of Life Scale Based on Choice Theory


  • Shirali Kheramin Social Determinants of Health Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
  • Ali Sahebi William Glasser Institute, Ipswich, Australia
  • Yasaman Ghafaryan Shirazi Faculty of Social Sciences, University of Tampere, Tampere, Finland
  • Mohammad Malekzadeh Social Determinants of Health Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
  • Shila Mohseni Islamic Azad University of Yasuj, Yasuj, Iran
  • Hamid Reza Ghafarian Shirazi Social Determinants of Health Research Center, Yasuj University of Medical Sciences, Yasuj, Iran



Quality of life scale, Choice theory, Reality therapy, Needs scale, Psychometrics


BACKGROUND: Choice theory, as a psychopathological model, postulated five basics, genetically and universally, needs. Accordingly, the rate of everybody happiness and quality of life is depended on the number of his needs fulfilling. Although some scales have been constructed to assess basic needs, they have proposed unity of needs for all human.

AIM: The present study was designed to construct a new scale, considering individualisation needs for each person; quality of life scale based on choice theory (QOLSCT).

METHODS: Using cluster sampling, six hundred (49% female and 51% male) postgraduate students were selected. One hundred fifty participants also filled SF-36 and GHQ, and 80 participants refilled QOLSCT with four weeks’ interval again.

RESULTS: Cronbach’s alpha, split-half and test re-test (one month) reliability scores were 0.78, 0.75, and 0.92 successively. The correlation between items and total scores range from 0.36 to 0.72, all with P values ≥ 0.0001. Confirmatory factor analysis showed satisfactory values of goodness-of-fit indices, RMSEA, CFI, NFI and GFI were, 0.05, 0.99, 0.99 and 0.99 respectively. Convergent and divergent validity also showed significant correlations.

CONCLUSION: The result of the present study showed that the new version of quality of life scale based on choice theory could be confirmed. The good level of reliability, fairly goodness of fit indexes, and very good convergent validity support this idea.


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How to Cite

Kheramin S, Sahebi A, Shirazi YG, Malekzadeh M, Mohseni S, Shirazi HRG. Construct and Psychometric Properties of a New Version Quality of Life Scale Based on Choice Theory. Open Access Maced J Med Sci [Internet]. 2019 Feb. 11 [cited 2023 Sep. 27];7(3):440-5. Available from:



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