The possible dependency of criterion validity on item formulation in a multicomponent measuring instrument is examined. The discussion is concerned with evaluation of the differences in criterion validity between two or more groups (populations/subpopulations) that have been administered instruments with items having differently formulated item stems. The case of complex item stems involving two stimuli description sentences (double-barreled questions) is thereby compared with the setting where items contained a single sentence. Using empirical data, the latent criterion validity differences are evaluated across three groups that are randomly assigned to conditions characterized by item stems with differing number of stimuli. The results indicate that validity of an instrument can be influenced by the specific way item stem is formulated. Implications for empirical educational, behavioral, and social science research are discussed.

检验了标准有效性对多组分测量仪器中项目公式的可能依赖性。讨论涉及评估两个或多个组（人群/亚群）之间标准有效性的差异，这些组（人群/亚人群）已使用具有不同公式化项目词干的项目进行管理。因此，将涉及两个刺激描述句子（双管问题）的复杂项目词干的情况与项目包含单个句子的设置进行比较。使用经验数据，潜在标准有效性差异在三个随机分配到以具有不同数量刺激的项目词干为特征的条件下进行评估。结果表明，工具的有效性会受到项目词干形成的特定方式的影响。