Taxometric analyses are a set of various mathematical procedures designed to determine whether the construct in question is dimensional/continuous (consisting of one class) or categorical/taxonic (consisting of two distinct classes).
The way researchers and practitioners assess a construct is rooted in whether that difference is conceptualized as a difference in degree (dimensional construct) or kind (categorical difference). This fundamental distinction can be particularly apparent in the field of medicine. The difference in the autosomal gene copy that determines the development of cystic fibrosis or Huntington disease is either present or absent, reflecting a categorical difference in type. In contrast, although categories have been superimposed upon weight (body mass index: BMI) and blood pressure values to qualify risk for health outcomes (e.g., obese, prehypertensive; National Heart, Lung, and Blood...
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