“…Interest in each theme was averaged to give scores representing four content categories established previously by factor analysis (Wilson, 1988): ''Intimate,'' ''Exploratory,'' ''Impersonal,'' and ''Sadomasochistic.'' The four factor structure of the WSFQ has been confirmed across several independent studies in culturally diverse non-paraphilic populations (the factor solutions explaining *45% of the total variance; Iwawaki & Wilson, 1983;Plaud & Bigwood, 1997;Sierra, Ortega, & Zubeidat, 2006;Wilson & Lang, 1981), non-clinical paraphilic samples (for example, in men belonging to fetishistic organizations; Gosselin & Wilson, 1980), and sexual offenders (Baumgartner, Scalora, & Huss, 2002). The averaged scores representing the four factors were used to quantify the extent of paraphilic interest by computing a variance-quotient (VQ = [Impersonal + Sadomasochistic]/ [Intimate + Exploratory]), previously shown to differentiate paraphilic from conventional heterosexual men in neurophysiological and behavioral investigations (Waisman, Fenwick, Wilson, Hewett, & Lumsden, 2003).…”