[Solved] What is hypothesized as one major reason that research on sensory integration intervention is not effective? A) Length of intervention B) Statistical analysis C) Fidelity of the intervention D) Qualifications of therapists Perversion: A deviation from what is considered normal or acceptable in sexual behavior, often carrying a negative judgment. Voyeurism: Observing an unsuspecting person who is naked, disrobing, or having sex. Paraphilia: Any intense and persistent sexual interest other than sexual interest in genital stimulation or preparatory fondling with phenotypically normal, physically mature, consenting human partners. Sexual Variation: Sexual variety and diversity in terms of sexual orientation, attitudes, behaviors, desires, fantasies, and so on; sexual activity not statistically typical of usual sexual behavior.