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On the value of homogeneous constructs for construct validation, theory testing, and the description of psychopathology.

机译：关于同构结构对于结构验证，理论测试和心理病理学描述的价值。

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The authors argue for a significant shift in how clinical psychology researchers conduct construct validation and theory validation tests. They argue that sound theory and validation tests can best be conducted on measures of unidimensional or homogeneous constructs. Hierarchical organizations of such constructs are useful descriptively and theoretically, but higher order composites do not refer to definable psychological processes. Application of this perspective to the approach of the Diagnostic and Statistical Manual of Mental Disorders to describing psychopathology calls into doubt the traditional use of the syndromal approach, in which single scores reflect the presence of multidimensional disorders. For many forms of psychological dysfunction, this approach does not appear optimal and may need to be discarded. The authors note that their perspective represents a straightforward application of existing psychometric theory, they demonstrate the practical value of adopting this perspective, and they provide evidence that this shift is already under way among clinical researchers. Description in terms of homogeneous dimensions provides improved validity, utility, and parsimony. In contrast, the use of composite diagnoses can retard scientific progress and hamper clinicians' efforts to understand and treat dysfunction.
机译：作者认为，临床心理学研究人员进行结构验证和理论验证测试的方式将发生重大变化。他们认为，合理的理论和验证测试最好对一维或同构结构的度量进行。这种结构的层次组织在描述和理论上都是有用的，但是高阶组合并不涉及可定义的心理过程。这种观点在《精神疾病诊断和统计手册》中描述心理病理学的方法的应用使人们怀疑传统的综合症治疗方法，其中单一评分反映了多维疾病的存在。对于许多形式的心理功能障碍，这种方法似乎不是最佳方法，可能需要放弃。作者注意到，他们的观点代表了现有心理学理论的直接应用，他们证明了采用这种观点的实用价值，并且他们提供了证据表明这种转变已经在临床研究人员中进行。就均一尺寸而言，描述提供了改进的有效性，实用性和简约性。相反，使用综合诊断会阻碍科学进展，并妨碍临床医生理解和治疗功能障碍的努力。

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