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Hormonal changes of intimate partner violence perpetrators in response to brief social contact with women.

ABSTRACT: This study investigated whether men with a history of real-life aggressive, dominant behavior show increases in testosterone and cortisol levels after brief social contact with women. Furthermore, we tested the prediction that such changes in hormones would be larger than those observed previously in young male students. Sixty-seven male participants convicted of intimate partner violence (IPV) either had brief social contact with a female confederate (experimental condition) or a male confederate (control condition). We also performed meta-analyses to investigate whether IPV perpetrators' hormonal responses were larger than the typical responses of young male students in prior studies. All statistical analyses were preregistered. Change in testosterone did not differ across experimental conditions, and testosterone in the IPV perpetrators actually declined from baseline in the female confederate condition. Our meta-analysis showed that this testosterone decrease was different from the testosterone increase typically observed in young male students. The cortisol levels of IPV perpetrators did not change in response to contact with women. This result was consistent with our meta-analysis since young male students also did not experience a cortisol change in response to interactions with women. In sum, our findings provide no evidence that male IPV perpetrators exhibit larger hormone increases to brief interactions with women, although it is possible that the men in this sample did not perceive the social contact period as a courtship opportunity. These results suggest that hormone reactivity to social encounters may differ across subject populations and depend on how subjects perceive social situations within laboratory settings.

SUBMITTER: van der Meij L

PROVIDER: S-EPMC9293448 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:BackgroundViolence against intimate partners is a worldwide public health problem. Cognitive behavioural therapy delivered in a group format is widely used for the treatment of men's violent behaviour towards their female partners. A Cochrane review about the effectiveness of this therapy from 2011 revealed a lack of controlled studies. Our aim is to update the current evidence on the effectiveness of cognitive behavioural group therapy on men's violent behaviour towards their female partner.MethodsThe Cochrane Library, the Campbell Collaboration Social, MEDLINE, PsychINFO, CINAHL, SCOPUS, Embase, Open Grey, Grey Literature Report, and Sociological Abstracts were searched for studies investigating the effectiveness of cognitive behavioural group therapy on intimate partner violence published in the period of January 1, 2010, to February 12, 2018. Manual searches were also performed to identify randomized and non-randomized controlled trials. Data extraction was done in duplicate. The primary outcome was the reduction in violent behaviour, and secondary outcomes were physical health, mental health, quality of life, emotion regulation, and substance use. Study quality was assessed with the Cochrane Collaboration's risk of bias tool and the Risk of Bias In Non-Randomized Studies of Interventions tool. A narrative summary was used to describe the review findings.ResultsWe identified six new studies that met the inclusion criteria: four randomized controlled trials and two non-randomized trials. Three of the randomized controlled trials found a reduction in intimate partner violence after treatment. The fourth randomized trial found that a subsample of responding partners reported a reduction in violence but no changes in the men's self-reported violence after treatment. No effect could be detected in the two non-randomized studies. Analysis of risk of bias revealed mixed results, indicating both strengths and weaknesses.LimitationsOnly a limited amount of studies which scored as "low quality" were available.ConclusionsThere is still insufficient evidence to confirm that cognitive behavioural group therapy for perpetrators of intimate partner violence has a positive effect. Future research should focus on randomized controlled studies distinguishing between convicted and non-convicted populations where violent behaviour is the primary outcome.Trial registrationCRD42016041493 .

Project description:IntroductionIntimate partner violence against women is one of the most common forms of violence. Different research fields are trying to understand the cycle of violence, such as the psychological field, to understand how these women's relational patterns and intrapsychic conflict function in the cycle of violence.ObjectiveTo investigate the operationalized psychodynamic diagnosis of women victims of domestic violence, exploring the severity and experience of violence, structural functions, dysfunctional interpersonal patterns, and intrapsychic conflicts.MethodWe conducted a cross-sectional quantitative study using the OPD-2 Clinical Interviews, which were recorded and transcribed. The sample was composed by 56 women victims of domestic violence, mean age 30.07 (SD = ±9.65). Reliability was satisfactory for judges interviews(k>0,6).ResultsAccording to the OPD-2 evaluation, we found that the severity of the violence was associated with the intensity of women's subjective suffering. In the relational pattern, they stay in the relationship, leaving themselves vulnerable; perceive the partner as controlling, aggressive, offensive, and fear abandonment. As a defensive mechanism to relational discomfort and suffering victims anticipate the aggressor's desire, resulting in submissive behavior. The main psychic conflict was the "need for care versus self-sufficiency" (78.6%). And medium was the predominant structure level, in which they presented insecure internal objects, presenting difficulties in emotional regulation and perceiving reality in a distorted way. Hence, they do not recognize their limitations and needs. We found that 78.6% of the cases had some psychiatric disorder: MDD, PTSD.ConclusionThis study provides empirical evidence on clinical observations on the psychological functioning of this population and the issues that make up the maintenance of domestic violence against women. The understanding of internalized patterns, structural functions, and motivational tensions are fundamental for the prevention of re-victimization and improving coping mechanisms, as well as promoting greater adherence to treatment.

Project description:PurposeViolence against women during pregnancy is a serious public health concern due to its significant adverse health consequences for both the mother and the baby. This study aims to systematically identify common health problems and synergistic health correlates of intimate partner violence (IPV) that specifically affect pregnant women.MethodsWe mine large-scale electronic health record (EHR) data from the IBM Explorys database to identify health problems that are prevalent in both IPV and pregnancy populations, as well those that are synergistically associated with the presence of IPV during pregnancy. For this purpose, we develop methods that enhance the statistical reliability of identified patterns by constructing confidence intervals that take into account systematic bias and measurement errors in addition to the variance in estimation.ResultsWe identify with high confidence 668 and 2750 terms that are respectively prevalent in respectively IPV and pregnancy populations. Of these terms, 279 are common. We also identify 16 synergistic health correlates with high confidence. Our results suggest that mental health, substance abuse, and genitourinary complications are prevalent among pregnant women exposed to IPV. The synergistic terms we identify reveal potential conditions that can be direct consequences of trauma (e.g., tibial fracture), long-term health consequences (e.g., chronic rhinitis), markers associated with the demograhics of affected populations (e.g., acne), and risk factors that potentially increase vulnerability during pregnancy (e.g., disorders of attention and motor control).ConclusionsOur results indicate that IPV significantly affects the well-being of pregnant women in multiple ways. The findings of this study can be useful for screening of IPV in pregnant women. Finally, the methodology presented here can also be useful for investigating the synergy between other medical conditions using EHR databases with privacy constraints.

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Hormonal changes of intimate partner violence perpetrators in response to brief social contact with women.

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