Chunk #16 — Issues Concerning the Determination of Homogeneity

Source: On the value of homogeneous constructs for construct validation, theory testing, and the description of psychopathology.
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A related concern involves the risk of infinite reduction; after all, individual items differ from each other and do not covary perfectly. Does each item represent its own dimension? When can we conclude we are measuring constructs at the level of homogeneity?