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Children who show elevated levels of indirect aggression (IA) from childhood to adolescence are at increased risks of experiencing detrimental outcomes. Some studies suggest that psychopathic traits could act as a predisposing vulnerability in the development of IA, but the contributions of all three dimensions of psychopathic traits in explaining developmental trajectories of IA from childhood to adolescence remain unclear. This study aimed to determine if the three dimensions of psychopathic traits during childhood (i.e., callous-unemotional, narcissism-grandiosity, and impulsivity-irresponsibility at 6-9 years old) increase the risk of following a high IA trajectory across preadolescence, and whether sex moderated these associations. Participants were 744 children (47% girls; 93% born in Quebec, Canada, and over 50% from low socioeconomic backgrounds) assessed annually over 5 years. Approximately half of them (n = 370; 40.3% girls) were referred to school-based services for conduct problems (CP) at study intake. Latent class growth analyses revealed four developmental trajectories of IA, which were regressed on psychopathic traits dimensions using a three-step approach. After adjusting for demographic confounders, CP, and other dimensions of psychopathic traits, only narcissism-grandiosity traits significantly predicted memberships to a high and stable trajectory of IA use. The associations between the other dimensions of psychopathic traits and IA trajectories were not significant when considering confounders. No moderating effects by child sex were observed. These results suggest that narcissism-grandiosity traits could be of use for clinicians aiming to detect children most at risk of showing high and persistent levels of IA.

Research shows that sports participation in youth is associated with earnings in adulthood. However, studies have often relied on self-reported earnings and on single indicators of sports participation. Using large-scale data linked to administrative records, we investigate: (a) whether sports attitudes at age 13 are uniquely related to income at ages 30–36 and (b) whether educational attainment and mental health in early adulthood mediate this association. We find that a one SD increase in sports attitudes is related to a 10% increase in income. This association is not entirely confounded by preexisting and co-occurring risk factors. Educational attainment mediates 22% of the association between sports attitudes and income. Sports attitudes are potentially a form of capital deployed in the pursuit of socioeconomic advantages. [ABSTRACT FROM AUTHOR]

Classroom placement of twins is an ongoing issue for educational policy. Many educational jurisdictions have standard policy most commonly founded in the belief that separation supports individual identity, personal development and academic opportunity. This study examined the effects of classroom placement in a sample of 560 twin pairs whose behaviors were assessed from ages 5 to 12 years. We found no detrimental effect of classroom sharing on twins' social development. In contrast, this study provides evidence that educating twins together is associated with modest positive twins' behaviors and social functioning at school. Implications for educational policies are further discussed.

School dropout can be an ongoing process of academic failure and disengagement starting as early as elementary school. Given the importance of early identification of risk factors, the present study examines (a) whether early conduct problems and depressive symptoms predict a higher risk of school dropout, (b) whether depressive symptoms moderate the association between conduct problems and risk of school dropout, and (c) the sex differences in these associations. Using data from a longitudinal study on 744 children aged 6-9 (T1), a multiple linear regression was performed to test for the effect of conduct problems and depressive symptoms (T1) and the interaction between them on the risk of school dropout (T8), as well as for sex differences in these associations. Results showed that conduct problems significantly predicted a higher risk of school dropout 7 years later, while depressive symptoms did not. Depressive symptoms significantly moderated the effect of conduct problems on the risk of dropout, with conduct problems having a stronger effect in children with higher depressive symptoms. No sex differences were found. These results suggest that recognizing and treating depressive symptoms in children with conduct problems may be an important step in reducing their risk of dropout.

This study examined the longitudinal contribution of four different childcare arrangements attended during the preschool years to social behaviors and academic achievement up to age 15 years. Children participating in a Canadian longitudinal survey with available information on childcare attendance between ages 3 and 5 years (N = 6,852) were measured on multiple social behaviors (hyperactivity/inattention, depression/anxiety, disruptive behaviors) and academic outcomes (mathematic skills, academic achievement) across both childhood and adolescence. We conducted a propensity score matching analysis to control the selection bias for childcare attendance and performed generalized estimating equation models for panel data among matched groups. Our results showed no clear social or academic long-term advantage for Canadian children of attending any childcare arrangement in comparison to children being exclusively cared for by their parents. In contrast, children attending daycare centers had higher levels of hyperactivity/inattention until the age of 15 years. Children also had lower mathematic skills if attending daycare centers or informal childcare at preschool age, but this effect dissipated from childhood to adolescence. Interestingly, children from low-income families had higher levels of depression/anxiety if being cared for at home by someone other than their parents or relatives. This finding supports the dual-risk hypothesis suggesting that children from already impoverished families and attending informal childcare in their own home are at greater risk for internalizing difficulties.

Background: The objectives of this study were to (a) assess the associations between early behavioral problems and intergenerational income mobility (i.e., the degree to which income status is transmitted from one generation to the next), (b) verify whether these associations are moderated by child sex, and (c) explore indirect effects of early behavioral problems on income mobility via high school graduation. Methods: Data were drawn from the Quebec Longitudinal Study of Kindergarten Children (n = 3,020; 49.17% girls). Participants were followed from age 6 to 37 years. Measures included parents' and teachers' ratings of behavioral problems at age 6 years as well as participants' (ages 30–35 years) and their parents' (when participants were aged 10–19 years) income data obtained from tax return records. Regression models were used to predict upward and downward mobility (i.e., increased or decreased income status from one generation to the next) from attention‐deficit/hyperactivity problems, conduct/opposition problems, depression/anxiety problems, prosociality, and the quality of children's relationship with their caregiver. Two‐way interaction effects between behavioral problems and child sex were examined and indirect effect models including high school graduation as a mediator of these associations were conducted. Results: Despite their higher educational attainment, females had lower incomes and experienced lower upward (but higher downward) income mobility than males. For both females and males, higher levels of attention‐deficit/hyperactivity and conduct/opposition problems were associated with decreased odds of upward mobility, whereas higher levels of attention‐deficit/hyperactivity were associated with increased odds of downward mobility. Attention‐deficit/hyperactivity problems, conduct/opposition problems as well as low prosociality were associated with lower educational attainment (no high school diploma), which in turn was associated with increased odds of downward mobility. Conclusions: Results highlight the importance of providing intensive support to children with early behavioral problems as a means of improving educational attainment and intergenerational income mobility. [ABSTRACT FROM AUTHOR]

This study aimed to examine the associations between child temperament and trajectories of the three dimensions of the student–teacher relationship (Closeness, Conflict, and Dependency) during elementary school. Latent class growth analyses conducted among 744 French‐Canadian students recruited between 2008 and 2010 (46.8% girls; Mage = 8.39; 90.9% White; 49.7% with externalizing behavior problems) revealed four Closeness trajectories and three Conflict trajectories, but no significant variability between children in mean levels of change in Dependency. Surgency‐Extraversion and Effortful control were associated with specific trajectories of Closeness and Conflict. Effortful control was also associated with cross‐sectional assessments of Dependency. These results suggest that temperament is a useful construct in understanding developmental patterns of the student–teacher relationship across the elementary school years. [ABSTRACT FROM AUTHOR]

Background: This study aimed to identify perinatal and early-life factors associated with trajectories of psychopathic traits across childhood. Methods: Participants were 1631 children (51.5% girls) from the Quebec Longitudinal Study of Child Development. A wide range of perinatal and early - life factors were assessed from pregnancy to age 2.5 years using medical files and mothers' reports. Psychopathic traits were assessed via teachers' reports at ages 6, 7, 8, 10, and 12 years. Latent class growth analyses and multinomial logistic regressions controlling for child sex were conducted. Two-way interaction effects between perinatal/early-life factors and child sex were explored. Results: Four trajectories of psychopathic traits were identified: High-stable (4.48%), Increasing (8.77%), Decreasing (11.46%), and Low-stable (75.29%). A few perinatal factors and most child-level and family-level early-life factors significantly increased the odds of following the High-stable v. the Low-stable trajectory. Higher levels of psychotropic exposures during pregnancy, socioeconomic adversity, child's physical aggression, child's opposition, mother's depressive symptoms, and hostile parenting increased the likelihood of following the Increasing instead of the Low-stable trajectory. Higher socioeconomic adversity, mother's depressive symptoms, and inconsistent parenting were associated with membership to the High-stable instead of the Decreasing trajectory. Most associations were not moderated by child sex. Conclusions: These results shed light on the perinatal and early-life factors that are associated with specific pathways of psychopathic traits during childhood and suggest that different factors could be targeted to prevent the exacerbation (v. low and stable levels) or the stability at high levels (v. attenuation) of these traits. [ABSTRACT FROM AUTHOR]

Background: Callous-unemotional (CU) traits (e.g., lack of empathy and guilt, deficient affect) have been associated with severe and persistent patterns of conduct problems and antisocial behaviour as well as with poorer treatment outcomes. They are now a specifier to the diagnosis of conduct disorder., Objective: To examine the associations between CU traits and a wide set of psychopathological symptoms (e.g., anxiety, conduct disorder) in a sample of adolescent females., Method: 200 adolescent females ( M = 15.55 years, SD = 1.64) recruited from French high schools located in Montreal, Quebec, Canada ( n = 150) and from units/resources managed by the Montreal Youth Center ( n = 50) self-reported on their levels of CU traits and psychopathological symptoms., Results: Participants recruited from high schools, compared to their counterparts from the youth center, had lower scores on most of the scales and subscales of CU traits and psychopathology. The total score of CU traits as well as the callousness-uncaring dimension were correlated with externalizing symptoms for the participants from the schools and from the youth center. However, the total score of CU traits as well as the unemotional dimension were correlated with internalizing symptoms especially among participants from the schools., Conclusions: Our analyses revealed differences in the patterns of associations depending on the subscales of CU traits and across sample types (i.e., school subsample versus youth center subsample), which should be considered in the assessment of psychopathology in these populations., Competing Interests: Conflict of Interest The authors have no financial relationships or other ties to disclose., (Copyright © 2023 Canadian Academy of Child and Adolescent Psychiatry.)