The Co-Twin Control Design: Implementation and Methodological Considerations.

Establishing causal relationships in observational studies is an important step in research and policy decision making. The association between an exposure and an outcome can be confounded by multiple factors, often making it hard to draw causal conclusions. The co-twin control design (CTCD) is a powerful approach that allows for the investigation of causal effects while controlling for genetic and shared environmental confounding factors. This article introduces the CTCD and offers an overview of analysis methods for binary and continuous outcome and exposure variables. Tools for data simulation are provided, along with practical guidance and accompanying scripts for implementing the CTCD in R, SPSS, and Stata. While the CTCD offers valuable insights into causal inference, it depends on several assumptions that are important when interpreting CTCD results. By presenting a broad overview of the CTCD, this article aims to equip researchers with actionable recommendations and a comprehensive understanding of the design's strengths and limitations.

Online Disclosure of Sexual Victimization: A Systematic Review.

We map the available scientific literature on how and why victims of sexual violence use digital platforms in the aftermath of victimization. Twenty-four empirical studies on sexual victimization and online disclosure were identified by systematically searching Web of Science and PsycINFO, checking reference lists, and consulting authors about relevant publications. The literature on online disclosure of sexual victimization does not yield a coherent picture. International literature pays limited attention to the various components of online disclosure like the characteristics of victims who disclosure online and the characteristics of the disclosure messages. Most studies focused on motivations for and reactions to online disclosure. Victims of sexual violence disclose sexual victimization online to seek support for clarification and validation, unburdening, documenting, seeking justice, informing others, or commercial goals (individual-oriented disclosure) and to provide support, educate, and as a form of activism (other-oriented disclosure). Responses to online disclosure are predominantly positive. Negative responses are rare. This review provides a comprehensive overview of multidisciplinary empirical information and displays knowledge gaps in victimological research. Future research should use robust quantitative and/or qualitative designs with substantial sample sizes, comparing victims who do disclose their sexual victimization online to victims who do not and comparing disclosure on different online platforms to increase generalizability. Potential for online support is identified, in which online disclosure can serve as a relatively safe alternative to off-line disclosure. This offers points of intervention for assistance and victim support in facilitating the use of the internet for support for victims of sexual violence.

Labeling and intergenerational transmission of crime: The interaction between criminal justice intervention and a convicted parent.

Labeling theory suggests that criminal justice interventions amplify offending behavior. Theories of intergenerational transmission suggest why children of convicted parents have a higher risk of offending. This paper combines these two perspectives and investigates whether labeling effects might be stronger for children of convicted parents. We first investigated labeling effects within the individual: we examined the impact of a conviction between ages 19-26 on self-reported offending behavior between 27-32 while controlling for self-reported behavior between 15-18. Our results show that a conviction predicted someone's later self-reported offending behavior, even when previous offending behavior was taken into account. Second, we investigated whether having a convicted parent influenced this association. When we added this interaction to the analysis, a labeling effect was only visible among people with convicted parents. This supports the idea of cumulative disadvantage: Labeling seems stronger for people who are already in a disadvantaged situation having a convicted parent.

Sex and age differences in the risk threshold for delinquency.

This study examines sex differences in the risk threshold for adolescent delinquency. Analyses were based on longitudinal data from the Pittsburgh Youth Study (n = 503) and the Pittsburgh Girls Study (n = 856). The study identified risk factors, promotive factors, and accumulated levels of risks as predictors of delinquency and nondelinquency, respectively. The risk thresholds for boys and girls were established at two developmental stages (late childhood: ages 10-12 years, and adolescence: ages 13-16 years) and compared between boys and girls. Sex similarities as well as differences existed in risk and promotive factors for delinquency. ROC analyses revealed only small sex differences in delinquency thresholds, that varied by age. Accumulative risk level had a linear relationship with boys' delinquency and a quadratic relationship with girls' delinquency, indicating stronger effects for girls at higher levels of risk.

Intergenerational continuity in convictions: a five-generation study.

BACKGROUND: Intergenerational continuity in offending has been assessed in several studies. However, this has rarely been studied using more than two prospective generations. Also, within-gender and cross-gender effects have rarely been addressed. The evidence for mechanisms that may explain transmission is mixed. METHOD: Using conviction data on five generations (n = 6322) that span the years 1882-2007, transmission from parent to child was studied, disaggregating for males and females. Parental conviction before the birth of the child was studied separately from parental conviction after the birth of the child. Transmission was studied using odds ratios. RESULTS: Parental convictions increase the risk of offspring convictions, although the risk increase is, at around two on average, not extremely high. Delinquency by the mother was also associated with offspring criminality, although because of low prevalence the odds ratios were more variable. Parental delinquency before birth does not lead to increased risk. For serious delinquency, these findings were stronger. CONCLUSIONS: The study suggests that nurture rather than hereditary or labelling mechanisms may play a role in intergenerational continuity.

After images and pain tolerance: a descriptive study on their interrelationship.

After images are based on physiological processes, they can also be treated as subjective phenomena with a psychological meaning. This statement also applies to pain. The basic working hypothesis of this study concerned the relationship between the two phenomena. Forty-one respondents (23 females, 18 males, age range 20-45 years) were given the Cold Pressor Test and the Serial After Image Technique. The data analysis was done by means of cross-tables and an exploratory optimal scaling program (OVERALS). Three pain tolerance groups (low, medium, high) could be differentiated fairly well on the basis of the after image characteristics of the respondents. Pain intolerant respondents more frequently had small and "immature" after images, whereas highly pain tolerant respondents had more large and "mature" after images. The implications of these results for a bio-psycho-social theoretical frame of reference for pain are discussed.