A Nerd Blog

The Seven Team Roles Scale (STRS) was officially launched as a scale in 2018. There is a LOT that goes into building a reliable and validated scale, so here are some of the details for those who likely play the Conceptualizer Role and want to know more about the veracity and robustness.

The Seven Team Roles Scale (STRS) measures the values-driven roles that contribute to a significant goal. A seven-factor solution was produced, identifying distinct team roles. It was and continues to be statistically tested in terms of reliability and discriminant validity among factors.

Internal consistency was examined using Cronbach’s alpha, all within the moderate to good range, supporting scale reliability. There is no cross-loading above 0.4 on any scale. A validation study was conducted using the TWIVI values scale, grounded in the work of Shalom Schwartz, whose influential theory of basic human values informed the conceptual framework behind the validation process. Schwartz's values theory emphasizes universal values, and the STRS aligns with the roles individuals take to contribute to shared goals based on underlying values. A Kruskal-Wallis one-way analysis of variance was used to determine significant differences between roles and values. The non-parametric data were analyzed with either a Kruskal-Wallis analysis of variance or an independent samples median test. The results contributed to both convergent and discriminant construct validity.

SPSS version 24 was used to analyze data. Principal component analysis was performed on all data sets using primarily a varimax rotation with a Kaiser Normalization as factors were expected to be uncorrelated. However, an oblique rotation was also utilized for comparison and verification of best fit. Reliability was calculated for the item clusters to determine Cronbach’s alphas. Component correlations and means options were employed as well as descriptive statistics.