What is the primary behavior in Voyeuristic Disorder?

The primary behavior in Voyeuristic Disorder is characterized by the act of spying on individuals who are engaged in private activities, such as undressing or engaging in sexual activities. This behavior is driven by a strong sexual arousal in response to observing others without their knowledge or consent. Individuals with Voyeuristic Disorder typically derive pleasure from the act of watching and may feel a sense of excitement from the secrecy of the behavior, distinguishing it from mere curiosity or consensual activity.

Understanding this context helps clarify the reasons why other options do not align with the diagnostic criteria for Voyeuristic Disorder. Engaging in sexual acts with others pertains to sexual dysfunctions or paraphilias focused on direct sexual interaction, while public displays of sexual arousal are unrelated to the voyeuristic aspect focused on observation. Manipulating others for sexual gain implies a level of interpersonal control and deceit that is not a defining component of Voyeuristic Disorder. The disorder centers on the compulsion and arousal associated with watching others, which is why the correct answer emphasizes the act of spying on others during their private moments.