[Solved] What is used when a random number of responses must be emitted before reinforcement occurs? A) fixed ratio schedule B) variable interval schedule C) fixed interval schedule D) variable ratio schedule Voyeuristic Disorder: A condition where an individual gains sexual pleasure from secretly observing unsuspecting people who are naked, in the process of disrobing, or engaging in sexual activities. Diagnostic and Statistical Manual: A publication by the American Psychiatric Association that provides standardized criteria for the classification of mental disorders. Exhibitionist: An individual who feels a strong urge to expose their genitals to strangers as a means of sexual gratification. Paraphilic: Relating to desires, behaviors, or fantasies that are considered outside the normative range of sexual interest, often involving non-consensual or inappropriate targets.