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Although researchers have valued dichotomization because it can simplify conducting and presenting analyses, statisticians have criticized the general use of this procedure because it reduces power and can lead to invalid results. Despite this, researchers continue to regularly dichotomize continuous measures, as evidenced by the presence of median splits and other forms of artificial categorization in the published literature. This suggests that researchers do not find the currently presented arguments against dichotomization compelling enough to avoid using the procedure. In response, this article provides a new, more pragmatic examination of the effects of dichotomization focused on how this practice can impede the pursuit of researchers’ professional and personal goals. Specifically, we present an examination of the effects of dichotomization phrased in terms of the sensitivity, specificity, positive predictive value, and negative predictive value of hypothesis tests, showing that dichotomization makes it more likely researchers will publish false results and reduces their ability to detect true findings in their data.

The present study examined measurement invariance and convergent validity of a novel vignette-based measure of emotion-specific self-regulation that simultaneously assesses attributional bias, emotion-regulation, and self-efficacy beliefs about emotion regulation. Participants included 541 youth–mother dyads from three countries (Italy, the United States, and Colombia) and six ethnic/cultural groups. Participants were 12.62 years old ( SD = 0.69). In response to vignettes involving ambiguous peer interactions, children reported their hostile/depressive attribution bias, self-efficacy beliefs about anger and sadness regulation, and anger/sadness regulation strategies (i.e., dysregulated expression and rumination). Across the six cultural groups, anger and sadness self-regulation subscales had full metric and partial scalar invariance for a one-factor model, with some exceptions. We found support for both a four- and three-factor oblique model (dysregulated expression and rumination loaded on a second-order factor) for both anger and sadness. Anger subscales were related to externalizing problems, while sadness subscales were related to internalizing symptoms.

This study examined gender-specific longitudinal pathways from harsh parenting through rumination to anxiety and depression symptoms among early adolescents from three countries and six subgroups. Participants were 567 mothers, 428 fathers, and 566 children (T1: Mage = 10.89; 50% girls) from Medellín, Colombia (n = 100); Naples, Italy (n = 95); Rome, Italy (n = 99); Durham, North Carolina, United States (Black n = 92, Latinx n = 80, and White n = 100). Parent reported maternal and paternal harsh parenting were measured at T1. Adolescent reported rumination was measured at T2 (Mage = 12.58) and anxiety and depression symptoms were measured at T1 and T3 (Mage = 13.71). Rumination mediated the pathway from maternal harsh discipline to girls’ anxiety and depression symptoms, controlling for baseline anxiety and depression symptoms. The more harsh discipline mothers used, the more their daughters ruminated, which in turn was associated with increased anxiety and depression symptoms. Exploratory moderated mediation analyses indicated that the strength of the mediational pathway from maternal harsh discipline through girls’ rumination to anxiety and depression symptoms decreased as the normativeness of harsh parenting increased. Mediational pathways for boys and for paternal harsh discipline were not significant. Our findings expand knowledge on specific contexts in which rumination is a mechanism for understanding pathways to anxiety and depression symptoms.

This longitudinal study examined the unique and joint effects of early adolescent temperament and parenting in predicting the development of adolescent internalizing symptoms in a cross-cultural sample. Participants were 544 early adolescents (T1: Mage = 12.58; 49.5% female) and their mothers (n = 530) from Medellín, Colombia (n = 88), Naples, Italy (n = 90), Rome, Italy (n = 100) and Durham, North Carolina, United States (African Americans n = 92, European Americans n = 97, and Latinx n = 77). Early adolescent negative emotionality (i.e., anger and sadness experience), self-regulation (i.e., effortful control), and parent monitoring and psychological control were measured at T1. Adolescent internalizing symptoms were measured at three time points. Latent Growth Curve Modeling (LGCM) without covariates or predictors indicated a slight linear increase in internalizing symptoms from ages 13–16 years across nearly all cultural groups. Multi-group LGCMs demonstrated several paths were consistently invariant across groups when examining how well temperament and parenting predicted intercept and slope factors. Higher initial levels of internalizing symptoms were significantly predicted by higher adolescent negative emotionality and parental psychological control as well as lower adolescent effortful control and parental monitoring measured one year earlier. Overall, adolescent effortful control appeared to protect against the emergence of internalizing symptoms in all cultures, but this effect faded over time. This study advances knowledge of the normative development of internalizing symptoms during adolescence across cultures while highlighting the predictive value of early adolescent temperament and parenting.