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Soc. Sci. 2016, 5(2), 25; doi:10.3390/socsci5020025

Validity and Reliability of the Problem Solving Inventory (PSI) in a Nationwide Sample of Greek Educators

1
Primary Education Directorate of Eastern Attica, 150 Lavriou Ave & 4 Andrikou str., 15454 Glyka Nera, Greece
2
Early Childhood Education, University of Ioannina, P.O. Box 1186, 45110 Ioannina, Greece
*
Author to whom correspondence should be addressed.
Academic Editor: Martin J. Bull
Received: 27 December 2015 / Revised: 12 May 2016 / Accepted: 10 June 2016 / Published: 15 June 2016
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Abstract

The Problem Solving Inventory (PSI) is designed to measure adults’ perceptions of problem-solving ability. The presented study aimed to translate it and assess its reliability and validity in a nationwide sample of 3668 Greek educators. In order to evaluate internal consistency reliability, Cronbach’s alpha coefficient was used. The scale’s construct validity was examined by a confirmatory factor analysis (CFA) and by investigating its correlation with the Internality, Powerful others and Chance Multidimensional Locus of Control Scale (IPC LOC Scale), the Rosenberg Self-Esteem Scale (RSES) and demographic information. Internal consistency reliability was satisfactory with Cronbach’s alphas ranging from 0.79 to 0.91 for all PSI scales. CFA confirmed that the bi-level model fitted the data well. The root mean square error of approximation (RMSEA), the comparative fit index (CFI) and the goodness of fit index (GFI) values were 0.030, 0.97 and 0.96, respectively, further confirming the bi-level model and the three-factors construct of the PSI. Intercorrelations and correlation coefficients between the PSI, the IPC LOC Scale and the RSES were significant. Age, sex, and working experience differences were found. In conclusion, the Greek version of the PSI was found to have satisfactory psychometric properties and therefore, it can be used to evaluate Greek teachers’ perceptions of their problem-solving skills. View Full-Text
Keywords: problem-solving; reliability; validity; confirmatory factor analysis; teachers/educators; Greek sample; PSI problem-solving; reliability; validity; confirmatory factor analysis; teachers/educators; Greek sample; PSI
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Kourmousi, N.; Xythali, V.; Theologitou, M.; Koutras, V. Validity and Reliability of the Problem Solving Inventory (PSI) in a Nationwide Sample of Greek Educators. Soc. Sci. 2016, 5, 25.

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