Neural differentiation of emotional faces as a function of interpersonal violence among adolescent girls

Interpersonal violence (IV) is associated with altered neural threat processing and risk for psychiatric disorder. Representational similarity analysis (RSA) is a multivariate approach examining the extent to which differences between stimuli correspond to differences in multivoxel activation patterns to these stimuli within each ROI. Using RSA, we examine overlap in neural patterns between threat and neutral faces in youth with IV. Participants were female adolescents aged 11-17 who had a history of IV exposure (n = 77) or no history of IV, psychiatric diagnoses, nor psychiatric medications (n = 37). Participants completed a facial emotion processing task during fMRI. Linear mixed models indicated that increasing hippocampal differentiation of fear and neutral faces was associated with increasing IV severity. Increased neural differentiation of these facial stimuli in the left and right hippocampus was associated with increasing physical abuse severity. Increased differentiation by the dACC correlated with increasing physical assault severity. RSA for most ROIs were not significantly associated with univariate activity, except for a positive association between amygdala RSA and activity to fear faces. Differences in statistically significant ROIs for physical assault and physical abuse may highlight distinct effects of trauma type on encoding of threat vs. neutral faces. Null associations between RSA and univariate activation in most ROIs suggest unique contributions of RSA for understanding IV compared to traditional activation. Implications include understanding mechanisms of risk in IV and trauma-specific treatment selection. Future work should replicate these findings in longitudinal studies and identify sensitive periods for neural alterations in RSA.

Associations among posttraumatic growth, demographic characteristics, posttraumatic stress symptoms, and trauma type, with a focus on sexual violence

This study assessed posttraumatic growth (PTG) across multiple trauma types and by demographic characteristics (i.e., sex, age, education). Moreover, we examined the association between PTG and posttraumatic stress disorder (PTSD) symptoms as well as the characteristics and predictors of PTG after sexual violence. A phone survey was conducted in a nationally representative sample of 1,766 Icelandic adults. In total, 1,528 individuals reported having experienced some form of trauma and were included in the analysis, and 563 reported experiencing sexual violence. Interpersonal trauma (e.g., sexual violence, emotional abuse, and domestic violence) was associated with the highest levels of PTG. Moderate levels of PTSD symptoms were associated with the highest levels of PTG, whereas high- or low-level PTSD symptoms were related to less PTG. Women reported significantly more PTG than men, d = 0.16 and survivors of sexual violence reported significantly more PTG than individuals who reported other forms of trauma exposure, d = 0.28. Among sexual violence survivors, no demographic factors were associated with PTG, but cumulative trauma and positive social reactions were significantly related to higher levels of PTG. This study highlights that personal growth can result from aversive experiences and suggests a curvilinear association between PTG and PTSD symptoms.

Posttraumatic growth, purpose, and trauma in university survivors of sexual assault

Objective: This study focused on purpose as a key mechanism of posttraumatic growth for university student survivors of sexual assault. Participants: An online survey was completed by 278 participants of various ethnic, racial and gender backgrounds, recruited through email, social media, department subject pools, and Amazon Mechanical Turk. Methods: Researchers used mixed methods, concurrent triangulation approach in which quantitative and qualitative data were collected simultaneously with closed and open-ended questions. Results: Hierarchical multiple regression demonstrated that age, purpose in life, high magnitude stressors, and trauma history were significantly related to posttraumatic growth. Emergent themes described the impacts of sexual assault, how sexual assault impacts purpose, and ways in which purpose impacted posttraumatic growth. Conclusion: Results confirmed the association of purpose with posttraumatic growth as well as other key impacts of trauma that should be investigated further. Next steps include evaluating therapeutic interventions focused on purpose.

From Fantasy to Reality: Self-Reported Aggression-Related Sexual Fantasies Predict Sexually Sadistic Behavior beyond Indirect and Direct Measures of Sexual Preference

Aggression-related sexual fantasies (ASF) have been related to various forms of harmful sexual behavior in both sex offender and community samples. However, more research is needed to fully understand this relation, particularly whether ASF is associated with harmful sexual behavior beyond hostile sexism against women and a sexual preference for violence and sexual violence. In the present study, N = 428 participants (61.9% women) between 18 and 83 years of age (M = 28.17, SD = 9.7) reported their ASF and hostile sexism. They rated their sexual arousal by erotic, violent, and sexually violent pictures as a direct measure of sexual preference. Response latencies between stimulus presentation and arousal ratings were used as an indirect measure of sexual preference. ASF and the directly and indirectly assessed sexual preference for violent and sexually violent stimuli were positively correlated. They were unrelated to hostile sexism against women. ASF showed the strongest associations with self-reported sexually sadistic behavior and presumably non-consensual sexual sadism beyond these preferences and hostile sexism in the total group and separately among men and women. The findings indicate that ASF and sexual preference are not equivalent constructs and further underscore the potential relevance of ASF for harmful sexual behavior.

Rape Acknowledgment and Sexual Minority Women's Mental Health and Drinking Behaviors

Adult sexual assault (ASA) has been linked to numerous negative psychological and behavioral outcomes. Recent research suggests that postassault adaptation may differ based on how the victim conceptualizes their ASA. For instance, women who label their rape experiences as such (i.e., acknowledged rape victims) report worse mental health symptoms than women who do not (i.e., unacknowledged rape victims). To date, this literature has focused exclusively on heterosexual women. Relative to heterosexuals, sexual minority women (SMW) are at greater risk for sexual assault and report worse postassault outcomes, yet little is known about rape acknowledgment in this at-risk population. Moreover, it is unclear how distal factors, such as childhood sexual abuse (CSA), may influence SMW's rape acknowledgment following ASA. A total of 205 self-identified lesbian and bisexual women were categorized into four groups (no ASA, ASA that did not involve rape, rape acknowledged, rape unacknowledged) and compared across mental health and drinking outcomes. Roughly, 42% of the sample experienced rape, and of those, 60% were acknowledged rape victims. Results revealed no statistical differences between acknowledged and unacknowledged rape victims in terms of mental health or alcohol use. However, relative to comparison groups, SMW who were acknowledged rape victims reported greater mental health symptoms, and both acknowledged and unacknowledged rape victims reported greater hazardous drinking. Among SMW with rape histories, greater CSA severity increased the probability of acknowledging rape. These findings provide valuable information regarding SMW's postassault adaptation and can contribute to interventions to assist SMW who experience sexual assault.

A Preliminary Examination of Negative Life Events and Sexual Assault Victimization as Predictors of Psychological Functioning in Female College Students: Does One Matter More Than the Other?

The present study examined negative life events (NLEs) and sexual assault victimization as predictors of positive and negative psychological functioning in a sample of 151 female college students. Results obtained from conducting regression analyses indicated several notable patterns. NLEs, compared with sexual assault victimization, were a stronger negative predictor of positive functioning based on indices related to subjective well-being (e.g., life satisfaction, positive affect). Alternatively, sexual assault victimization, compared with NLEs, was a stronger positive predictor of negative functioning based on indices related to posttraumatic stress disorder symptoms (e.g., anxiety) and related conditions (e.g., alcohol use). Furthermore, both NLEs and sexual assault victimization were found to be positive predictors of negative functioning based on indices related to suicide risk (e.g., depressive symptoms, suicidal behaviors). Overall, our findings indicate that both NLEs and sexual assault victimization represent important and distinct predictors of psychological functioning in female college students.

Sexual Assault Characteristics and Perceptions of Event-Related Distress

Sexual assault (SA) is a potent psychological stressor, linked to harmful mental health outcomes in both the short- and long-term. Specific assault characteristics can add to the toxicity of SA events. Although research has assessed characteristics of the assault itself (e.g., force, penetration), few studies have examined the larger socioenvironmental context in which SA takes place. This was the purpose of the present study. Young adults ( N = 220; 80% female; 54% current students) reported on their most recent SA during college. Cross-sectional associations were tested via structural equation modeling to determine the contributions of socioenvironmental context and assault characteristics in predicting event-related distress. Socioenvironmental context from the most recent assault included assault setting, intoxication at the time of the assault, perpetrator relationship, and prior consensual sexual experiences with the perpetrator. We also examined assault characteristics, including physical force and penetration. Participants reported how upsetting the most recent assault was (a) at the time it occurred and (b) currently. Results revealed differential patterns for socioenvironmental context and assault characteristics based on the timing of distress (past or present). Notably, many of the socioenvironmental factors showed associations with distress above and beyond the powerful effects of physical force and penetration. These findings have important implications for our understanding of the unique factors that contribute to and maintain psychological distress in sexually victimized young adults.

Violence against women

Violence against women causes suffering and misery to victims and their families and places a heavy burden on societies worldwide. It mostly happens within intimate relationships or between people known to each other. Violence against women is a social construction based on a societal consensus about the roles and rights of men and women. Two prevalent forms of violence against women are physical and sexual victimization by an intimate partner, and sexual victimization outside intimate relationships. Explanations of why men engage in aggressive behavior toward women address different levels, including the macro level of society, the micro level of dyadic interactions, and the individual level of perpetrator characteristics. Prevention efforts are needed that address each of these levels.

Eating disorders, trauma, PTSD, and psychosocial resources

The frequency of traumatic events and comorbid post-traumatic stress disorder (PTSD) in women with eating disorders (ED) was assessed. Also, patients with anorexia nervosa (AN) and bulimia nervosa (BN) were compared; post-traumatic symptomatology and the role of psychosocial resources were analyzed. One hundred three ED patients (29.1±10.5 years) were studied through the use of standardized questionnaires. We found that 23.1% of AN and 25.5% of BN patients fulfilled the study definition for a current diagnosis of PTSD. Cumulative traumatization led to more severe symptomatology. Psychosocial resources were found to have strong associations with symptomatology. These findings provide additional support for the association between traumatization and ED. Clinical interventions for traumatized ED patients may benefit from a focus on post-traumatic stress symptomatology and personal resources.