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问题上尚未达成共识，其仍是当前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，以期开发出心理测量学属性更优、理论适配性更强的测评工具。本研究分为两个阶段：第一阶段为探索性研究，共纳入149份有效观测样本，通过删减两个维度对EBACO的心理测量学适配性进行评估；第二阶段为验证性研究，覆盖45家组织（其中27家为公立机构、18家为私营机构），共获取812份有效观测样本。本研究采用验证性因子分析对修订后模型的心理测量学属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Kaiser-Meyer-Olkin检验值（KMO）、克朗巴赫α系数（Cronbach’s Alpha）以及解释方差占比上均表现更优。同时，该模型的拟合优度指标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）均达到了可接受的标准。最后，本研究证实修订后的EBACO-R模型具备聚合效度，确保该量表能更好地契合理论框架。此外，本研究通过删减冗余维度完成模型修订，这一过程也为Osigweh（1989）提出的“概念延伸型”承诺相关讨论提供了新的研究支撑。