Measurement Invariance of Personal Well-Being Index (PWI-8) Across 26 Countries

Piotrowski, Jarosław P.
Cieciuch, Jan
Adams, Byron G.
Osin, Evgeny N.
Ardi, Rahkman
Bălţătescu, Sergiu
Bhomi, Arbinda Lal
Clinton, Amanda
Clunie, Gisela T. de
Esteves, Carla
Gouveia, Valdiney
Hosseini, Ashraf
Khachatryan, Narine
Kamble, Shanmukh Vasant
Kawula, Anna
Liik, Kadi
Letovancova, Eva
Mora, Carles Alsinet
Nartova-Bochaver, Sofya
Nikolic, Marija
Park, Joonha
Paspalanova, Elena
Pék, Győző
Różycka-Tran, Joanna
Truong Thi Khanh, Ha
Tsubakita, Takashi
Vauclair, Christin Melanie
Włodarczyk, Anna
Maltby, John
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This report examines the measurement invariance of the Personal Well-being Index with 8 items (PWI-8). University students (N = 5731) from 26 countries completed the measure either through paper and pencil or electronic mode. We examined uni-dimensional structure of PWI and performed a Multi-group CFA to assess the measurement invariance across the 26 countries, using conventional approach and the alignment procedure. The findings provide evidence of configural and partial metric invariance, as well as partial scalar invariance across samples. The findings suggest that PWI-8 can be used to examine correlates of life satisfaction across all included countries, however it is impossible to compare raw scores across countries ​
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