Abstract

The purpose of the study was to psychometrically characterize the Ethical Leadership Scale (ELS) through confirmatory factor analysis (CFA) and Rasch analysis. Data were collected from 469 teachers across several countries. The one-factor structure of the ELS was confirmed in CFA. Rating scale diagnosis, item fit assessment, reliability analysis, unidimensionality, local independence, and differential item functioning (DIF) analyses were conducted using the Rasch Rating Scale Model. Item and rating scale analyses indicated that the ten items and five-category scale performed as intended. High person separation and reliability statistics supported the consistency of the ELS scores. Only one item (Item 4) demonstrated misfit in the Rasch model and two items (i.e., Items 2 and 10) showed DIF across Turkish and European respondents. None of the items showed DIF across gender. Overall CFA and Rasch models provided evidence for the psychometric quality of the 10-item ELS. However, reassessment of the scale after removing Item 4 showed improvement in the psychometric properties of the scale.

摘要

该研究的目的是通过验证性因素分析 (CFA) 和 Rasch 分析从心理测量学上表征道德领导力量表 (ELS)。数据来自多个国家的 469 名教师。ELS 的单因素结构在 CFA 中得到证实。使用 Rasch 评定量表模型进行评定量表诊断、项目适合度评估、可靠性分析、单维性、局部独立性和差异项目功能 (DIF) 分析。项目和等级量表分析表明十个项目和五个类别量表按预期执行。高人分离和可靠性统计支持 ELS 分数的一致性。只有一个项目（项目 4）在 Rasch 模型中表现出不匹配，而两个项目（即项目 2 和 10）在土耳其和欧洲受访者中显示出 DIF。没有一个项目显示出跨性别的 DIF。整体 CFA 和 Rasch 模型为 10 项 ELS 的心理测量质量提供了证据。然而，在删除第 4 项后重新评估量表显示量表的心理测量特性有所改善。