Reliability and Validity of Adults’ Personal Wellbeing Index (PWI-A)

The purpose of the research is to investigate the psychometric properties of adults’ personal wellbeing index (PWI-A) in Iranian clinical and non-clinical samples.

This is a descriptive research included two non-clinical (992 students) and clinical (137 patients referred to Family Health Clinic and 111 subjects as control group) groups selected by cluster sampling and purpose sampling, respectively. Research tools included: General Health Questionnaire (GHQ) and World Health Organization’s WHOQOL BREEF.

The findings of the research showed that PWI has a suitable reliability based on the total alpha coefficient (0.89) and correlation coefficient of test-retest (0.79). Exploratory factor analysis indicated its situation from one factor and indexes of confirmatory factor analysis confirm the moderate fitness of the model. Moreover, correlation coefficients indicate convergent validity of the scale with similar tools.

The findings of the research show that personal wellbeing index – adults PWI-A has good psychometric properties for studying Iranian adults’ quality of life.