Ebaco-R: Refinement of organizational commitment bases scale

ABSTRACT Despite being extensively studied, the organizational commitment still remains in the research agenda due to a lack of consensus on conceptual and structural issues. Therefore, this research proposed to refine the Organizational Commitment Bases Scale (EBACO) in search for an instrument with better psychometric properties and a better theoretical adjustment. The research was divided into two phases, the first one was eminently exploratory, carried out with 149 observations, and evaluated the EBACO’s psychometric fitting with the reduction of two bases. The second phase, confirmatory, occurred in 45 organizations - 27 public and 18 private, with 812 observations. The confirmatory factor analysis was adopted to evaluate the psychometric properties and the theoretical adequacy of the refined model. The results indicated that with five dimensions the EBACO model presented higher levels of KMO, Cronbach’s Alpha, and explained variance. It was also verified that the model discussed obtained adequate values of the goodness of fit indexes χ2/df, RMSEA, CFI, TLI and RMR. Finally, it was verified that the refined model, EBACO-R, presented a convergent validity, ensuring a greater suitability of the scale to the theory. Furthermore, the model refinement, excluding the bases, contributes to the discussion by Osigweh (1989) about the 'concept stretching' commitment.

摘要 尽管组织承诺已得到广泛研究，但由于在概念与结构层面尚未达成共识，其仍是研究议程中的核心议题。为此，本研究旨在对组织承诺基础量表（Organizational Commitment Bases Scale, EBACO）进行修订，以开发出具备更优心理测量学特性与理论适配性的测评工具。本研究分为两个阶段：第一阶段为探索性研究，共纳入149份有效观测数据，通过删减两个维度对EBACO的心理测量适配性进行评估；第二阶段为验证性研究，覆盖45家组织（其中27家为公共部门、18家为私营部门），共收集812份有效观测数据。本研究采用验证性因子分析，对修订后模型的心理测量学特性与理论适配性进行评估。结果显示，包含5个维度的EBACO模型在KMO检验值、克朗巴赫α系数以及解释方差量上均表现更优。同时，本研究证实所探讨的模型在卡方自由度比（χ²/df）、近似误差均方根（RMSEA）、比较拟合指数（CFI）、塔克-刘易斯指数（TLI）以及残差均方根（RMR）等拟合指标上均达到适配标准。最后，本研究证实修订后的量表EBACO-R具备聚合效度，进一步确保了该量表与理论框架的更高适配性。此外，本次通过删减维度完成的量表修订，也为Osigweh（1989）提出的关于承诺“概念延伸”的相关讨论提供了新的研究支撑。