Community-Level Factors As Positive and Negative Correlates of Sexual Aggression Perpetration Among Adolescent Boys

Often, perpetrators of sexual violence first aggress in their teens. Presently, very little is known about environmental factors that may influence adolescents' engagement in sexual aggression. Drawing upon data collected at 27 high schools in the Northeast United States, this study is the first to test the association between community-level factors and male adolescents' sexual aggression. A series of backward linear regressions determined that 10 of 19 community variables were associated with males' sexual aggression, which were then used to generate a ratio of positive to negative correlates of sexual aggression for each high school. In multilevel analyzes, as hypothesized, the ratio of positive to negative correlates was positively associated with schools' sexual aggression perpetration rates. We discuss the study's implications for future sexual assault research and prevention interventions.

Associations of Adolescents' Pornography Viewing with their Romantic Relationship Skills and Behaviors

Research into adolescent pornography use has identified numerous individual-level behavioral and attitudinal correlates. However, associations between adolescents' pornography viewing and their romantic relationships remain understudied. Furthermore, very little is known about adolescents' watching pornography with their romantic partners (i.e., joint pornography use). The present study of adolescents (n = 755, 59.9% girls, M age = 15.72 years old [SD = 1.34]) is among the first attempts to link adolescents' pornography viewing behaviors to their romantic relationship attitudes and behaviors. We hypothesized that adolescents' viewing would be associated with poorer self-reported relationship skills, more negative relationship behaviors, and increased involvement in sexual activity, such as sexting. Partial support for these hypotheses was found. Frequency of overall viewing was associated with lower relationship and refusal skills. Lifetime joint pornography viewing was associated with higher rates of dating violence victimization and perpetration in the past six months and with more abusive behaviors from one's partner and more verbal conflict in the current dating relationship. Results, though cross-sectional, suggest that pornography viewing in adolescence is associated with poorer romantic outcomes. Implications for adolescent development and for healthcare providers and educators are discussed.

Longitudinal Associations Among Adolescents' Sexual Attitudes, Beliefs, and Behaviors

Youth sex and relationship education programs aim to improve adolescent well-being by changing their knowledge, beliefs, and attitudes regarding sex and their health. However, there is a gap in existing research linking these cognitive targets to relevant behaviors, and a particular dearth of data on links with sexual behaviors. The current study tested longitudinal links between cognitive factors related to sex (attitudes about sex, normative beliefs, risk-avoidant intentions, and confidence in refusal skills) and outcomes of sexual behaviors (recent sexual encounters, number of sexual partners, and frequency of condom use). Data were drawn from three waves of data from a panel study of US high-school students and were analyzed using cross-lagged structural equation modeling. We hypothesized direct, reciprocal links between intentions and behaviors, but this hypothesis was not supported. Instead, more conservative attitudes about sex emerged as the most consistent prospective predictor of fewer sexual encounters and sexual partners, though with small effect sizes (βs = - .08 to - .131, ps < .05). Further, bidirectional interrelationships were observed among several of the cognitive and behavioral variables over time. These results highlight attitudes about sex as a potentially useful intervention target, but also suggest that sex and relationship education curricula and evaluations should consider multiple pathways of links between cognition and behavior. Continued research is needed on causal links between adolescents' sexual attitudes, knowledge, intentions, and behavior.

Impact and implementation findings from a cluster randomized trial of a youth relationship education curriculum

The current study presents implementation and impact data from a cluster randomized trial of a youth relationship education curriculum. High school students (n = 1,135) were randomized at the school level to receive curricula-as-usual or a healthy relationships program delivered by facilitators who were not employed by the high schools. Program evaluators reported high engagement and students indicated high satisfaction with the program, but multilevel models showed no statistically significant impacts on healthy relationship skills, attitudes, and behaviors at three and nine months post-intervention. Strengths and limitations of the research design and program implementation, as well as implications for evaluating youth relationship education more broadly, are discussed.

Happy, healthy, and wedded? How the transition to marriage affects mental and physical health

Decades of research have documented the apparent health benefits of marriage, but the dynamics of how health may change across the transition to marriage are not fully understood. In two studies, we compared being unmarried or married on several indices of mental and physical health. In Study 1, we used a national sample of 1,078 individuals in different-sex relationships who completed surveys by mail. Compared with those who were cohabiting or dating, married individuals generally reported better mental and physical health than those in less committed relationships, and most differences remained when controlling for putative selection factors. Study 2 used longitudinal data from the participants in the Study 1 sample who later married (N = 168) to study changes within individuals over the transition to marriage on the same indicators. Six waves of mailed surveys spanning 20 months were employed. Findings of Study 2 indicated that although some indicators of mental and physical health were improving up until the point of marriage, these indicators then stabilized or began to decline, with women experiencing these declines more than men. Findings are more consistent with selection effects (i.e., better-adjusted individuals are more likely to get married) than social causation effects (i.e., marriage causes improvements in mental and physical health) and suggest that if marriage does have a causal effect on well-being in the short term, it may actually manifest in the lead-up to the wedding. Implications of these findings are discussed. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

A Latent Class Analysis of Predictors for Engaging in Sex: A Study with Ethnically Diverse High School Students

Sexual activity occurs among a large portion of young adults and adolescents, including high school students. While about 40% of high school students nationwide have engaged in sexual intercourse, more information is needed about how individual characteristics may relate to larger patterns of adolescent sexual behavior. This exploratory study utilized a latent class analysis (LCA) to identify clusters of high school students (N = 801) based on demographic characteristics, sexual refusal skills, healthy relationship skills, sociosexuality, internalizing symptoms, alcohol use, various forms of social support (i.e., parents, friends, teachers), and sexual activity at baseline to predict their sexual behavior at a 6-month follow-up. Four unique latent classes were identified based on these baseline predictors. Distinctions in the profiles of high schoolers varied significantly by internalizing symptoms, race/ethnicity, sexually conservative attitudes, and social support in the prediction of adolescent sexual activity at 6-months. This study contributes to the investigation of demographic, social, psychological, attitudinal, and behavioral factors that may distinguish high school students from one another in terms of their longitudinal rates of sexual activity.

The Confluence Model of Sexual Aggression: An Application With Adolescent Males

The Confluence Model of Sexual Aggression is a well-established framework for understanding factors that contribute to men's perpetration of sexual aggression against women, highlighting the roles of hostile masculinity, impersonal sex orientation, and exposure to pornography. To date, only one study has applied aspects of the Confluence Model to examine predictors of sexual aggression in adolescent males, and the study did not include pornography exposure as a predictor. The current study evaluates the Confluence Model as a framework for understanding the perpetration of both contact and noncontact sexual aggression in a sample of 935 heterosexual 10th-grade adolescent boys. Composite scores for hostile masculinity and impersonal sex orientation were generated. Nearly all the variables included in the hostile masculinity and impersonal sex constructs were associated with perpetration. Zero-inflated Poisson regression models revealed distinct combinations of salient predictors when the dependent variable was identified as boys' frequency of perpetration, compared with when the dependent variable was defined as any perpetration of sexual aggression. Impersonal sex orientation and violent pornography exposure were associated with perpetrating noncontact sexual aggression in the last 6 months, while violent pornography exposure and the interaction of hostile masculinity and impersonal sex orientation increased the frequency of recent contact sexual aggression. Results suggest that hostile masculinity, impersonal sex orientation, and violent pornography exposure are important factors to address within sexual assault prevention approaches for adolescent boys.

Community-level risk & protective correlates of violent crimes

Despite declining rates over the past several decades, violence continues to be a pervasive public health problem. To date, we have very little knowledge about the factors at the outer layers of the social ecology that may serve to protect or exacerbate violence. The purpose of the present research is to identify community-level risk and protective correlates of multiple forms of violent crime. Official crime data were collected from 36 of the municipalities (92%) across the state of Rhode Island. Additionally, the research team identified 23 types of community establishments and identified the number of each for each of the 36 municipalities. Semi-partial correlations were computed between the 23 community variables and each of nine types of violent crimes. While there were a number of significant results, only a few meaningful patterns were found. The number of transit stations was associated with all forms of sexual violence, sex trafficking, and general physical assault. Gun dealers were associated with domestic assault, child abuse, kidnapping, and assault with a weapon, but inversely related to sex trafficking. Boys and Girls Clubs were negatively associated with the number of assaults, assaults with a weapon, sexual assaults, sexual assaults on a child, sex trafficking, and kidnappings. Contrary to prior findings, the number of alcohol outlets was generally unrelated to violent crime. These findings must be interpreted with great caution given nature of the research design. However, this study provides an initial step to advance the research on community-level risk and protective factors for violence.

Watching Pornography Alone or Together: Longitudinal Associations With Romantic Relationship Quality

Pornography viewing has been cross-sectionally and longitudinally linked to poorer romantic relationship quality. However, only a few studies have looked at (1) the associations of changes in pornography viewing over time with relationship characteristics, (2) differential impacts of watching alone and watching with one's partner, and (3) how gender moderates these associations. The current study utilizes multilevel modeling to assess for between- and within-subject effects of watching pornography alone versus together on romantic relationship quality over time. A random national sample of 1,234 individuals, who began the study in unmarried heterosexual romantic relationships of at least 2 months' duration, completed five waves of mail-in surveys over a 20-month period. Watching pornography alone was generally associated with poorer relationship quality for men (e.g., lower relationship adjustment and commitment, less emotional intimacy), but better relationship quality for women. People who reported watching more pornography with their partner reported more relationship intimacy and increases in watching together over time were associated with increases in sexual intimacy. Both watching alone and watching together were related to higher levels of psychological aggression between partners, with few differences by gender. Implications for sex education, relationship education, and couples therapy will be discussed.

Working memory load-dependent changes in cortical network connectivity estimated by machine learning

Working memory engages multiple distributed brain networks to support goal-directed behavior and higher order cognition. Dysfunction in working memory has been associated with cognitive impairment in neuropsychiatric disorders. It is important to characterize the interactions among cortical networks that are sensitive to working memory load since such interactions can also hint at the impaired dynamics in patients with poor working memory performance. Functional connectivity is a powerful tool used to investigate coordinated activity among local and distant brain regions. Here, we identified connectivity footprints that differentiate task states representing distinct working memory load levels. We employed linear support vector machines to decode working memory load from task-based functional connectivity matrices in 177 healthy adults. Using neighborhood component analysis, we also identified the most important connectivity pairs in classifying high and low working memory loads. We found that between-network coupling among frontoparietal, ventral attention and default mode networks, and within-network connectivity in ventral attention network are the most important factors in classifying low vs. high working memory load. Task-based within-network connectivity profiles at high working memory load in ventral attention and default mode networks were the most predictive of load-related increases in response times. Our findings reveal the large-scale impact of working memory load on the cerebral cortex and highlight the complex dynamics of intrinsic brain networks during active task states.

The Association Between Exposure to Violent Pornography and Teen Dating Violence in Grade 10 High School Students

Exposure to pornography in general has been linked with adolescent dating violence and sexual aggression, but less is known about exposure to violent pornography specifically. The current study examined the association of violent pornography exposure with different forms of teen dating violence (TDV) using baseline survey data from a sample of Grade 10 high school students who reported being in a dating relationship in the past year (n = 1694). Gender-stratified logistic regression models generated odds ratios adjusted for demographics, substance use, history of suspension/expulsion, gender equitable attitudes, and tolerance of rape myths to identify significant associations between violent pornography exposure and self-reported physical, sexual, and threatening TDV perpetration and victimization. Violent pornography exposure was associated with all types of TDV, though patterns differed by gender. Boys exposed to violent pornography were 2-3 times more likely to report sexual TDV perpetration and victimization and physical TDV victimization, while girls exposed to violent pornography were over 1.5 times more likely to be perpetrate threatening TDV compared to their non-exposed counterparts. Comprehensive prevention strategies for TDV may consider the potential risks associated with exposure to violent pornography, particularly for boys, and provide an alternative source of education about healthy sexual behavior and relationships.

Lessons learned on recruitment and retention in hard-to-reach families in a phase III randomised controlled trial of preparatory information for children undergoing general anaesthesia

BACKGROUND

Recruitment and retention are documented as two of the most difficult elements of conducting clinical trials. These issues are even more challenging in paediatric trials, particularly when the families being recruited and retained are deemed 'hard to reach'.

METHODS

Through the authors' own reflection on the conduct of the trial this paper examines recruitment and retention with hard to reach families from the perspective of a recently completed clinical trial on preparatory information for children undergoing general anaesthesia for tooth extractions in which approximately 83% of those approached and eligible agreed to participate.

RESULTS

The lessons learned for recruitment include: the importance of children's assent; maximising limited resources when screening and approaching potential participants; valuing families' time; and developing effective professional relationships. The retention rate was 83-85.5% at follow up time points up to 3.5 weeks following recruitment, insights into how this was accomplished include: ensuring continuity of care; determination to connect via telephone; valuing families' time; and close monitoring of appointment date changes.

CONCLUSIONS

Implications for future paediatric trials with hard to reach families are discussed.

TRIAL REGISTRATION

ISRCTN18265148 ; NIHR Portfolio 10,006. Date of Registration: 29 November 2013. The trial was registered after commencement but before completion of data collection.

Proton pinhole imaging on the National Ignition Facility

Pinhole imaging of large (mm scale) carbon-deuterium (CD) plasmas by proton self-emission has been used for the first time to study the microphysics of shock formation, which is of astrophysical relevance. The 3 MeV deuterium-deuterium (DD) fusion proton self-emission from these plasmas is imaged using a novel pinhole imaging system, with up to five different 1 mm diameter pinholes positioned 25 cm from target-chamber center. CR39 is used as the detector medium, positioned at 100 cm distance from the pinhole for a magnification of 4 ×. A Wiener deconvolution algorithm is numerically demonstrated and used to interpret the images. When the spatial morphology is known, this algorithm accurately reproduces the size of features larger than about half the pinhole diameter. For these astrophysical plasma experiments on the National Ignition Facility, this provides a strong constraint on simulation modeling of the experiment.

X-ray area backlighter development at the National Ignition Facility (invited)

1D spectral imaging was used to characterize the K-shell emission of Z ≈ 30-35 and Z ≈ 40-42 laser-irradiated foils at the National Ignition Facility. Foils were driven with up to 60 kJ of 3ω light, reaching laser irradiances on target between 0.5 and 20 × 10(15) W/cm(2). Laser-to-X-ray conversion efficiency (CE) into the Heα line (plus satellite emission) of 1.0%-1.5% and 0.15%-0.2% was measured for Z ≈ 30-32 and Z ≈ 40-42, respectively. Measured CE into Heα (plus satellite emission) of Br (Z = 35) compound foils (either KBr or RbBr) ranged between 0.16% and 0.29%. Measured spectra are compared with 1D non-local thermodynamic equilibrium atomic kinetic and radiation transport simulations, providing a fast and accurate predictive capability.

Four new coccidia (Apicomplexia: Eimeriidae) from anoles (Lacertilia: Polychrotidae) in the Dominican Republic

Fecal samples from 25 Anolis armouri, 2 Anolis bahorucoensis, 48 Anolis cybotes, and 21 Anolis olssoni (Lacertilia: Polychrotidae) from southern Hispaniola were examined for coccidian oocysts. Two eimerians and 2 isosporans are herein described as new species. Sporulated oocysts of Eimeria schwartzi n. sp. from A. armouri are ellipsoidal, 22.7 (20.8-25.0) x 15.7 (14.6-17.7) microns, with spherical to subspherical sporocysts, 7.9 (6.2-9.4) x 7.4 (6.2-8.3) microns. Sporulated oocysts of Isospora reui n. sp. from A. bahorucoensis are spherical to subspherical, 18.2 (15.6-20.0) x 17.8 (15.6-19.8) microns, with ovoid sporocysts, 11.9 (10.4-12.7) x 8.5 (7.5-9.4) microns. Sporulated oocysts of Isospora hendersoni n. sp. from A. armouri and A. cybotes are spherical to subspherical, 23.2 (20.8-26.0) x 21.1 (18.4-23.9) microns, with ellipsoidal sporocysts, 14.7 (12.5-15.6) x 10.0 (9.2-11.4) microns. Sporulated oocysts of Eimeria avilae n. sp. from A. olssoni are cylindrical, 29.3 (26.0-33.3) x 15.9 (13.5-18.9) microns, with ellipsoidal sporocysts 10.2 (9.4-11.4) x 6.8 (5.2-8.0) microns.

Translaryngeal guided intubation in an uncooperative patient with maxillofacial injury: case report

Maxillofacial injuries can produce a wide variety of airway problems. We report the case of a difficult airway situation in an intoxicated and combative patient with maxillofacial injury, for which we resorted to awake translaryngeal guided intubation (TLI).

A potential animal model for studying CF heterozygote advantage: genetic variation in theophylline-inducible colonic chloride currents among inbred strains of mice

We have used Ussing chambers to measure chloride secretion by colonic segments (mucosa, muscularis, and serosa) from various inbred strains of mice. We found lower theophylline-induced Cl- secretion in the DBA/2J than in the C57BL/6J strain. Their F1 showed significantly higher levels of Cl- secretion than did the C57BL/6J parental strain while colonic segments from five recombinant inbred B x D lines ranged between the C57BL/6J and F1 values. No major component of the variation appeared to be associated with alleles of the met oncogene region of chromosome 6 or the H-2 region of chromosome 17.