Psychometric properties of Authentic Leadership Self-Assessment Questionnaire in a population-based sample of Polish nurses.

The purpose of the study was to adapt and evaluate the psychometric characteristics of the Polish language version of the Authentic Leadership Self-Assessment Questionnaire intended for use among Registered Nurses. A cross-sectional study where the Authentic Leadership Self-Assessment Questionnaire was administered to a representative group of 3,299 Polish Registered Nurses was carried out between September and November 2017. Linguistic-cultural adaptation of the ALSAQ was carried out according to the WHO guidelines. The following psychometric properties of the ALSAQ were evaluated: content validity (content validity index), theoretical relevance (exploratory and confirmative factor analysis), unidimensionality of subscales (principal component analysis), internal consistency (Cronbach's alpha), test-retest reliability and criterion validity. The content validity analysis revealed a need to reduce the original ALSAQ version from 16-23 items. The factor structure of ALSAQ differed from the original version. A three-factor model was better fitted to the data than a four-factor model. The three distinguished subscales (moral processing, self-awareness, and relational transparency) were characterized by unidimensionality. ALSAQ has a good internal consistency (Cronbach's alpha 0.84) and test-retest analysis confirmed stability of the measurement for subscales and particular items. Moreover, the ALSAQ-P criterion validity with external variables, being of key importance for shaping the leadership skills (self-efficacy and universal moral foundations) was confirmed. Authentic leadership skills in nursing practice are characterized by their individual specificity, which was indicated in the ALSAQ validation. The ALSAQ can be considered a reliable and valid tool for self-assessment of leadership skills in a group of nursing practitioners. The identified standards help measuring strengths and weaknesses of authentic leadership.

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