The first objective of this study was to investigate which aspects of temperament are related to externalizing problem behavior and which aspects are related to internalizing problem behavior. The second objective was to investigate how parenting influences the link between temperament and problem behavior. The sample included 89 two-parent families and their firstborn 36-month-old children, and 81 day care and preschool playgroup teachers. Mothers, fathers and teachers filled in questionnaires and home observations took place. The results showed that different temperament characteristics predict externalizing and internalizing problems. Further, the results indicate that parenting moderates the relation between temperament and problem behavior. More specifically, positive control of the father buffered the relation between impulsivity and externalizing problems, whereas negative control of the mother and father strengthened the relation between fear and internalizing problems.

The aims of this study were to investigate whether sexual harassment is related to mental and physical health of both men and women, and to explore the possible moderating effects of gender on the relation between sexual harassment and health. In addition, we investigated whether women were more often bothered by sexual harassment than men, and whether victims who report being bothered by the harassment experience more health problems compared to victims who did not feel bothered. A representative sample of 3,001 policemen and 1,295 policewomen in the Dutch police force filled out an Internet questionnaire. It appeared that women were more often bothered by sexual harassment than men, but gender did not moderate the relation between sexual harassment and mental and physical health. In addition, victims who felt bothered by the harassing behaviors reported more mental and physical health problems than victims who did not feel bothered. The distinction between bothered and nonbothered victims is important because appraisal is an essential aspect in the operationalization of sexual harassment.

Prevalence figures on sexual violence among a representative sample of both men and women were not yet available for the Netherlands. The aim of this study, therefore, was to investigate the prevalence of sexual violence in the Netherlands and to add these figures to the international body of knowledge. Experiences of sexual violence during lifetime, before the age of 16 and in the year before the start of the study were measured. In addition, types of sexual violence were examined, as were the characteristics of the perpetrators. Lastly, revictimization and pregnancy as a result of rape experiences among the victims were investigated. Data were generated from a population survey on sexual health. The sample consisted of more than 6,000 men and women between the age of 15 and 70 years old. Prevalence rates as high as 21% for men and 56% for women were found. Fifty percent of the female victims and 30% of the male victims of child sexual abuse had experienced adult victimization. Of the female rape victims, 7% became pregnant as a consequence of rape. In the Netherlands, as elsewhere, the prevention of sexual violence should be prioritized.

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The present study examined whether the relationship between childhood gender nonconformity and sexual victimization in adulthood among lesbian, gay, and bisexual (LGB) same-sex attracted men and women is mediated by experiences with childhood trauma experiences by an adult family member. Data are based on a survey among same-sex attracted individuals (N= 2,352; 1,396 men and 956 women;M= 44.97) recruited from an online research panel. Participants completed an online questionnaire consisting of existing scales. Sixteen percent of the participants reported that they had experienced sexual victimization as an adult. There were gender differences: Men reported less childhood gender nonconformity and women more often reported experiences with childhood trauma by an adult family member and sexual victimization as an adult. Bootstrapped mediation analysis and follow-up moderated mediation analyses showed that childhood trauma significantly mediated the relation between childhood gender nonconformity and experiences of sexual victimization for men but not for women. In other words, for men higher levels of childhood gender nonconformity predicted experiences with childhood trauma by an adult family member, which in turn predicted the higher prevalence of sexual victimization. Implementations of these findings are that interventions aimed at increasing the social acceptance of gender nonconformity might also lower the levels of childhood trauma and sexual victimization among gay and bisexual men. Professionals working with children (and especially with boys) should be aware of the impact of gender nonconformity on childhood trauma and experiences of sexual victimization later in life.