... An initial taxo-metric investigation indicated that AS was dimensional at the latent level (Taylor, Rabian, & Fedoroff, 1999). However, a series of subsequent taxometric studies across a variety of nonclinical samples suggests that AS is categorical, or taxonic, at the latent level (e.g., Bernstein, Zvolensky, Kotov, et al., 2006;Bernstein, Zvolensky, Stewart, & Comeau, 2007;Bernstein, Zvolensky, Stewart, Comeau, & Leen-Feldner, 2006;Bernstein, Zvolensky, Weems, Stickle, & Leen-Feldner, 2005). This line of taxometric research suggests that the categorically distinct, high-AS group represents the top 10%-20% of the distribution and that AS is categorical in both female and male youth (Bernstein, Zvolensky, Weems, et al., 2005). ...