Pornography Use and Sexual Coercion: Examining the Mediation Effect of Sexual Arousal.

The increased accessibility and use of pornography in Western society highlights the emergent need to understand the relationship between its use and sexual coercion. Decades of research have demonstrated a consistent relationship between pornography use and engaging in sexually aggressive behavior, although what drives this relationship remains largely unexplained. Researchers have recently presented potential explanations for these relationships, such as the use of violent pornography types, the development of aberrant sexual scripts, and the frequency of pornography use. This study seeks to contribute to the explanation by examining the potential mediating effects of sexual arousal on the relationship between pornography use frequency and willingness to engage in verbal and illegal sexual coercive behaviors by examining a sample of male and female college adults. This population reports some of the highest rates of pornography use. The sample of 745 college students were exposed to either an exotic video presentation or a criminal justice lecture, and provided a dating scenario and sexual arousal assessments. Results indicated those young adults that consume pornography more frequently were more likely to experience higher levels of sexual arousal to the erotic video than those who reported little or no use. However, after controlling for several variables significantly related to sexual coercion, arousal did not mediate willingness to engage in verbal or illegal sexual coercive behaviors. Other significant results and implications are discussed.

The Static-99R Is Not Valid For Women: Predictive Validity in 739 Females Who Have Sexually Offended.

Although many instruments have been validated to assess risk of sexual recidivism among men, no similar tool exists for women who have sexually offended. As a result, some jurisdictions use male-based instruments to assess women despite the lack of validation research examining the predictive utility for this subgroup. This study examined the utility of the Static-99R in predicting sexual recidivism among women. Based on a sample of 739 women convicted of sexual offenses in Texas, findings show that the total score was not significantly associated with sexual recidivism. When looking at individual items, other than a history of prior sexual offenses and noncontact sexual offenses, no item of the Static-99R was significantly associated with sexual recidivism among women. Furthermore, only three items (female victims/solo offender, 4+ sentencing dates, and having not lived with a romantic other for 2+ years) were significantly associated with nonsexual recidivism. These findings indicate that the Static-99R is not suitable to assess risk of recidivism among women convicted of sexual offenses.

Directional deep brain stimulation leads reveal spatially distinct oscillatory activity in the globus pallidus internus of Parkinson's disease patients.

The goal of this study was to characterize the spectral characteristics and spatial topography of local field potential (LFP) activity in the internal segment of the globus pallidus (GPi) in patients with Parkinson's disease utilizing directional (segmented) deep brain stimulation (dDBS) leads. Data were collected from externalized dDBS leads of three patients with idiopathic Parkinson's disease after overnight withdrawal of parkinsonian medication at rest and during a cued reach-to-target task. Oscillatory activity across lead contacts/segments was examined in the context of lead locations and contact orientations determined using co-registered preoperative 7 Tesla (T) MRI and postoperative CT scans. Each of the three patients displayed a unique frequency spectrum of oscillatory activity in the pallidum, with prominent peaks ranging from 5 to 35 Hz, that modulated variably across subjects during volitional movement. Despite subject-specific spectral profiles, a consistent finding across patients was that oscillatory power was strongest and had the largest magnitude of modulation during movement in LFPs recorded from segments facing the postero-lateral "sensorimotor" region of GPi, whereas antero-medially-directed segmented contacts facing the internal capsule and/or anterior GPi, had relatively weaker LFP power and less modulation in the 5 to 35 Hz. In each subject, contact configurations chosen for clinically therapeutic stimulation (following data collection and blinded to physiology recordings), were in concordance with the contact pairs showing the largest amplitude of LFP oscillations in the 5-35 Hz range. Although limited to three subjects, these findings provide support for the hypothesis that the sensorimotor territory of the GPi corresponds to the site of maximal power of oscillatory activity in the 5 to 35 Hz and provides the greatest benefit in motor signs during stimulation in the GPi. Variability in oscillatory activity across patients is likely related to Parkinson's disease phenotype as well as small differences in recording location (i.e. lead location), highlighting the importance of lead location for optimizing stimulation efficacy. These data also provide compelling evidence for the use of LFP activity for the development of predictive stimulation models that may optimize patient benefits while reducing clinic time needed for programming.

Comparing Solo- and Co-Offending Female Sex Offenders on Variables of Pathology, Offense Characteristics, and Recidivism.

Due to the smaller proportion of female sex offenders (2%-12% of all sexual offenses) compared with male sex offenders, we know much less about these women to aid in the assessment, treatment, and prevention of their offending behavior compared with men. One promising distinction in female sex offender typology is solo-offending females versus females who offend with a male co-offender. The current study uses a sample of 225 incarcerated female sex offenders to compare solo and co-offending women on variables of psychopathology, criminal history, victim and offender information, and recidivism rates. Results indicate that solo offenders are more likely to have male, unrelated victims, score higher on dominance and aggression, and are more likely to generally recidivate. Solo versus co-offending status was not a significant predictor for sexual recidivism. Implications for assessment and treatment are discussed.

Pornography Use and Sexual Coercion: Examining the Importance of Frequency, Type, and Other Factors.

Research on pornography use and sexual coercion has provided some evidence that there is an association between these two behaviors. One area in this body of research where there is a need for improvement is the operationalization of pornography use. In particular, a need for researchers to capture all relevant aspects of pornography use that are associated with sexual coercion. These aspects include frequency of use, type of pornography used, investment in use, sexual scripts adopted from pornography, compulsive use, and first exposure. The current study aims to examine which of these aspects of pornography use are significantly associated with sexual coercion. A sample of 365 college males was surveyed on their pornography use, engagement in sexually coercive behaviors, and other relevant variables. Results show that sexual scripts and investment in pornography use are significantly related to self-reported sexual coercion. These findings indicate that the frequency with which someone views pornography may not be driving the relationship between pornography use and sexual coercion and that an individual's monetary investment in their pornography use habit, as well as their adoption of sexual scripts from pornography, may be what is driving this relationship. In addition, these findings have implications for the aspects of pornography use that researchers should focus on when examining the relationship between pornography use and sexual coercion.

Psychometric Evaluation of Initial Domains on the Comprehensive Assessment of Pornography Use Tool.

Research on pornography use and sexual coercion has provided inconsistent results. One explanation for this is the lack of a valid, reliable, and comprehensive measure of pornography use. This study seeks to address this need by developing a comprehensive pornography use instrument consisting of four domains identified in research: type of pornography used, sexual scripts, habits, and compulsivity. A sample of 324 college men was used. Results of the study yielded factor structures for these domains and evidence of reliability and validity. Findings present the initial development of a pornography use instrument that could improve research in this area and aid practitioners in treatment and supervision decisions.

Slow-wave sleep dysfunction in mild parkinsonism is associated with excessive beta and reduced delta oscillations in motor cortex.

Increasing evidence suggests slow-wave sleep (SWS) dysfunction in Parkinson's disease (PD) is associated with faster disease progression, cognitive impairment, and excessive daytime sleepiness. Beta oscillations (8-35 Hz) in the basal ganglia thalamocortical (BGTC) network are thought to play a role in the development of cardinal motor signs of PD. The role cortical beta oscillations play in SWS dysfunction in the early stage of parkinsonism is not understood, however. To address this question, we used a within-subject design in a nonhuman primate (NHP) model of PD to record local field potentials from the primary motor cortex (MC) during sleep across normal and mild parkinsonian states. The MC is a critical node in the BGTC network, exhibits pathological oscillations with depletion in dopamine tone, and displays high amplitude slow oscillations during SWS. The MC is therefore an appropriate recording site to understand the neurophysiology of SWS dysfunction in parkinsonism. We observed a reduction in SWS quantity (p = 0.027) in the parkinsonian state compared to normal. The cortical delta (0.5-3 Hz) power was reduced (p = 0.038) whereas beta (8-35 Hz) power was elevated (p = 0.001) during SWS in the parkinsonian state compared to normal. Furthermore, SWS quantity positively correlated with delta power (r = 0.43, p = 0.037) and negatively correlated with beta power (r = -0.65, p < 0.001). Our findings support excessive beta oscillations as a mechanism for SWS dysfunction in mild parkinsonism and could inform the development of neuromodulation therapies for enhancing SWS in people with PD.

The Role of Sexual Scripts in the Relationship Between Pornography Use and Sexual Coercion.

Decades of research have examined the association between pornography use and sexual coercion, with the most significant relationships found between more deviant genres of pornography use and sexual violence. However, researchers have yet to provide a comparable body of research examining the theoretical mechanism of this association. One theory that has shown promise in explaining the association between certain variables of pornography use and sexual coercion is the sexual script theory. In this theory, scripts can best be understood as a mechanism through which society defines and disseminates what is acceptable, desirable, and pleasurable sexual conduct. Studies examining the application of the sexual script theory to the association between pornography use and sexual coercion have found that pornography use has a significant indirect effect on sexual coercion and correlates of sexual coercion through sexual scripts. The current study sought to extend this line of inquiry by examining the relationship between pornography use, sexual scripts, and sexual coercion. A structural equation model examining direct and indirect effects of sexual scripts and pornography use on sexually coercive behaviors was run using a sample of 390 college-aged males. Results of the study indicated there were significant direct and indirect effects in the model. Specifically, pornography use, while not directly related to sexually coercive behaviors, had a significant indirect effect on sexual coercion through sexual scripts. These results further support the use of the sexual scripts theory to help explain the relationship between pornography use and sexual coercion.

Excessive cortical beta oscillations are associated with slow-wave sleep dysfunction in mild parkinsonism.

Increasing evidence associates slow-wave sleep (SWS) dysfunction with neurodegeneration. Using a within-subject design in the nonhuman primate model of Parkinson's disease (PD), we found that reduced SWS quantity in mild parkinsonism was accompanied by elevated beta and reduced delta power during SWS in the motor cortex. Our findings support excessive beta oscillations as a mechanism for SWS dysfunction and will inform development of neuromodulation therapies for enhancing SWS in PD.

Crossing the Threshold From Porn Use to Porn Problem: Frequency and Modality of Porn Use as Predictors of Sexually Coercive Behaviors.

According to recent statistics, as many as one in five female college students are victims of sexual assault during their college career. To combat what has been called the "Campus Rape Crisis," researchers have attempted to understand what variables are associated with sexually coercive behaviors in college males. Although investigators have found support for the relationship between pornography consumption and sexually coercive behavior, researchers typically operationalize pornography use in terms of frequency of use. Furthermore, frequency of use has been assessed vaguely and inconsistently. The current study offered a more concrete assessment of frequency of use and an additional variable not yet included for pornography use: number of modalities. Beyond examining the relationship between pornography use and sexual coercion likelihood, the current study was the first to use pornography variables in a threshold analysis to test whether there is a cut point that is predictive of sexual coercion likelihood. Analyses were conducted with a sample of 463 college males. Results indicated that both pornography use variables were significantly related to a higher likelihood of sexually coercive behaviors. When both frequency of use and number of modalities were included in the model, modalities were significant and frequency was not. In addition, significant thresholds for both pornography variables that predicted sexual coercion likelihood were identified. These results imply that factors other than frequency of use, such as number of modalities, may be more important for the prediction of sexual coercive behaviors. Furthermore, threshold analyses revealed the most significant increase in risk occurred between one modality and two, indicating that it is not pornography use in general that is related to sexual coercion likelihood, but rather, specific aspects of pornography use.

Bridging the Theoretical Gap: Using Sexual Script Theory to Explain the Relationship Between Pornography Use and Sexual Coercion.

Research has consistently shown a relationship between pornography use and sexually coercive behaviors, but this inquiry has yet to fully examine the theoretical mechanisms through which this relationship works. The current study will use a theory that has gained support and attention as a way to understand the relationship pornography use has with general sexual behaviors, but has not been widely used to explain its relationship with sexually coercive behaviors: the sexual script theory. In this theory, scripts are attitudes and ideas about what behavior is acceptable, desirable, and pleasurable, which exist at the societal, personal, and interpersonal levels. Using items that assess all three levels of sexual scripts, a path analysis was used to examine whether sexual scripts mediate the relationship between pornography use and sexual coercion likelihood in a sample of 463 college males. Results of the study provide further support for the theory as a way to explain the relationship between pornography use and sexual behavior, and, in particular, sexually coercive behavior. Findings from the analysis also indicate that the various levels of scripts interact with each other and work together to influence likelihood of sexual coercion, providing further insight into how sexual scripts are manifested in behavior. Finally, the results suggest that pornography use is a multidimensional construct comprised of variables extending beyond frequency of use, such as number of modalities used to view pornography. Future research should continue this line of inquiry, expanding on the operationalization of sexual scripts and pornography use, to strengthen these findings and better illuminate the theoretical understanding of the relationship between pornography use and sexual coercion.