Dahlstrom W G, Humphrey D H
Department of Psychology, University of North Carolina at Chapel Hill, 27599-3270, USA.
J Pers Assess. 1996 Apr;66(2):350-4. doi: 10.1207/s15327752jpa6602_12.
Ben-Porath and Tellegen (1995) claimed that the data in the article by Humphrey and Dahlstrom (1995) were improperly analyzed by means of Q correlations between raw scores earned by the individuals in the forensic sample to establish pattern comparability between the original Minnesota Multiphasic Personality Inventory (MMPI; Hathaway & McKinley, 1943) and the Minnesota Multiphasic Personality Inventory-2 (MMPI-2; Butcher, Dahlstrom, Graham, Tellegen, & Kaemmer, 1989), which were then contrasted with Q correlations between the corresponding T-score patterns. Ben-Porath and Tellegen (1995) contended that the Q correlation is affected by random factors and that a generalized distance function, D2, is the only legitimate index of profile comparability. Data are presented here to show that the Q correlation serves as a reliable index of pattern comparability, relatively unaffected by differences in profile elevation. The Mahalanobis (1936) D2 index is too heavily weighted with differences in profile elevation serve as the proper index of equivalence in profile patterning. The findings in the Humphrey and Dahlstrom (1995) article were based on appropriate data-analytic procedures because the primary concern is their investigation was the extent to which the patterns of T-score profiles from the original MMPI and the MMPI-2 are comparable when the raw-score patterns are virtually identical.
本-波拉特和泰勒根（1995年）声称，汉弗莱和达尔斯特伦（1995年）文章中的数据，通过对法医样本中个体所得原始分数进行Q相关分析，以确定原始明尼苏达多相人格调查表（MMPI；哈撒韦和麦金利，1943年）与明尼苏达多相人格调查表第二版（MMPI-2；布彻、达尔斯特伦、格雷厄姆、泰勒根和凯默，1989年）之间的模式可比性，这种分析方式是不当的，随后又将其与相应T分数模式之间的Q相关进行对比。本-波拉特和泰勒根（1995年）认为，Q相关受随机因素影响，而广义距离函数D2是模式可比性的唯一合理指标。本文给出的数据表明，Q相关是模式可比性的可靠指标，相对不受剖面图高度差异的影响。马氏（1936年）D2指数受剖面图高度差异的权重过大，无法作为剖面图模式等效性的恰当指标。汉弗莱和达尔斯特伦（1995年）文章中的研究结果基于适当的数据解析程序，因为他们调查的主要关注点是，当原始分数模式几乎相同时，原始MMPI和MMPI-2的T分数剖面图模式的可比程度。
