On the Assessment of Unidimensional Measurement: Internal and External Consistency, and Overall Consistency Criteria
评论了Kumar和Dillon提出的整体一致性标准，澄清了内部一致性与外部一致性的关系，指出其公式无法实际应用，并建议使用验证性因子分析来评估单维性。
Kumar and Dillon recently presented a conceptual, overall consistency criterion that represents a sufficient condition for consistency. In commenting on their article, the authors (1) clarify the interrelated nature of internal consistency and external consistency, (2) show that the “bogus perfect fit” example is itself “bogus” in that it cannot occur in either theory or practice, (3) underscore that the specific overall consistency criterion formula defined by Kumar and Dillon cannot be applied in practice, whereas the internal consistency and external consistency criteria can, and (4) caution against using within-block factor analyses as recommended by Kumar and Dillon, and instead advocate the use of confirmatory factor analysis with multiple-indicator measurement models for assessing unidimensionality. In an addendum, the authors discuss their position on unidimensionality and its assessment, contrasting it with the Kumar and Dillon position on unidimensionality and consistency.