Equivalent measurement is obtained when the relations between observed test scores and the latent attribute measured by the test are identical across subpopulations.
若观测变量和潜在特质之间的关系在相比较的群体之间等同，就称该量表具备测量等价性。
Equivalent measurement is obtained when the relations between observed test scores and the latent attribute measured by the test are identical across subpopulations.
若观测变量和潜在特质之间的关系在相比较的群体之间等同，就称该量表具备测量等价性。
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