Sexual affordances, perceptual-motor invariance extraction and intentional nonlinear dynamics: sexually deviant and non-deviant patterns in male subjects.

Sexual arousal and gaze behavior dynamics are used to characterize deviant sexual interests in male subjects. Pedophile patients and non-deviant subjects are immersed with virtual characters depicting relevant sexual features. Gaze behavior dynamics as indexed from correlation dimensions (D2) appears to be fractal in nature and significantly different from colored noise (surrogate data tests and recurrence plot analyses were performed). This perceptual-motor fractal dynamics parallels sexual arousal and differs from pedophiles to non-deviant subjects when critical sexual information is processed. Results are interpreted in terms of sexual affordance, perceptual invariance extraction and intentional nonlinear dynamics.

Measuring sexual preferences in virtual reality: a pilot study.

Virtual reality (VR), as a method to assess sexual preferences, is explored. Dynamics of the subjective point of view (POV), subjective affective state, and feeling of presence, as measured following the interaction with a virtual naked model, appear as promising ways to probe sexual preferences as expressed in immersion. Theoretical aspects of VR psychology and further steps in developing a sexual preferences assessment method are delineated.

Sexual self-regulation and cognitive absorption as factors of sexual response toward virtual characters.

The eye movements and penile responses of 20 male participants were recorded while they were immersed with virtual sexual stimuli. These participants were divided into two groups according to their capacity to focus their attention in immersion (high and low focus). In order to understand sexual self-regulation better, we subjected participants to three experimental conditions: (a) immersion with a preferred sexual stimulus, without sexual inhibition; (b) immersion with a preferred sexual stimulus, with sexual inhibition; and (c) immersion with a neutral stimulus. A significant difference was observed between the effects of each condition on erectile response and scanpath. The groups differed on self-regulation of their erectile responses and on their scanpath patterns. High focus participants had more difficulties than low focus participants with inhibiting their sexual responses and displayed less scattered eye movement trajectories over the critical areas of the virtual sexual stimuli. Results are interpreted in terms of sexual self-regulation and cognitive absorption in virtual immersion. In addition, the use of validated virtual sexual stimuli is presented as a methodological improvement over static and moving pictures, since it paves the way for the study of the role of social interaction in an ecologically valid and well-controlled way.

Use of visual reaction time to assess male adolescents who molest children.

With the recent realization of the extent to which adolescents are committing sexual offenses, researchers have attempted to identify valid and reliable assessment instruments for this population. Some such assessment instruments (i.e., plethysmography, self-report) have met with criticism relative to their utility with juvenile offenders. The present study aimed to assess the validity of the Abel Assessment for sexual interest (AASI) with male adolescents who have molested children. Results indicated that the amount of time male adolescent child molesters viewed slides of children was significantly longer than nonmolesters. Additionally, viewing time of slides of children for male adolescent child molesters was significantly correlated with their number of victims and the number of times they carried out acts of child molestation. These results support the AASI as a valid measure of sexual interest in adolescent male child molesters.