Designing and Validating A Short Form of Team Leadership Measurement Tool (A Mixed-Methodology Study in Teacher Teams)

In the last decade, team leadership as a scientific area has had significant progress. Therefore, creating a short form of team leadership measurement tool can facilitate studies in this area. Therefore, the purpose of this study is to design and validate a short team leadership measurement tool. The research used a mixed-consecutive exploratory methodology; qualitative-quantitative. In qualitative phase, the focus group method was used. The research population was all experts in the field of leadership and team, who were selected by judgmental purposive sampling method. Twenty nine experts in the field of leadership and team were selected. The research tools in the qualitative phase were structured interviews and expert survey forms. To analyze the data, item analysis method, content validity ratio and peer review were used. In the quantitative phase, correlation method was used. The study population was all secondary school teachers in Kurdistan province. A sample of 346 teachers was selected by stratified random sampling method based on Cochran's formula. The short form of the team leadership measurement tool in the qualitative phase was used to collect data. For data analysis, exploratory factor analysis and second-order confirmatory factor analysis techniques and Cronbach's alpha coefficient were used by SPSS25 and LISREL10.30 software. Findings show that the short form of the team leadership measurement tool with two transitional and action function, with fifteen items in the qualitative and quantitative phases,  had good validity and reliability. The contribution of this study is to provide a standard tool designed from a mixed study that can be utilized to measure team leadership.