What do the terms "categorical" and "dimensional" mean when used in research on differences?

Question

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When used in research on differences, "categorical" refers to a binary or categorical approach where individuals are grouped based on distinct categories or classifications. For example, in gender research, individuals may be classified as either male or female. "Dimensional" refers to a continuous or more nuanced approach where individuals are placed on a spectrum or continuum. For example, in personality research, individuals may score differently on several dimensions such as openness, conscientiousness, extraversion, agreeableness, and neuroticism. The best choice is B because it accurately describes the difference between the two terms and provides an example of their application in research on gender and personality.

What Do the Terms "Categorical" and "Dimensional" Mean When Used