Brigitte Wanner

Trajectories of gambling during adolescence.

This study aimed at empirically identifying groups of adolescents with distinct longitudinal trajectories of gambling involvement and validating these groups by comparing them with respect to correlates. 903 low SES boys were followed annually from age 11 to 16 years. Three groups were found: an early-onset high-level chronic group, a late-onset high-level group, and a low gambler group. The Chronic group and the Low group consistently differed on teacher-rated inhibition (i.e., anxiety) during childhood and early adolescence. They also differed on concurrent teacher and self ratings of disinhibition (i.e., impulsivity), while the Late Onset group appeared to lie in between these groups. Compared to the Low group, both high groups subsequently had elevated scores on later gambling related problems.

Parent and Peer Effects on Delinquency‐related Violence and Dating Violence: A Test of Two Mediational Models

Drawing on two complementary process models of violence, i.e., social cognitive theory and rejection sensitivity theory, the goal of the present study was (1) to examine the unique effects of parents and peers on boys’ violent behavior in delinquency-related contexts and in dating relationships, (2) to assess the mediating processes underlying these links, and (3) to test whether these processes operate in the same way for delinquency-related violence and dating violence. Based on a sample of 336 boys, results showed that problematic experiences with parents and with peers each predicted subsequent violence, both in delinquency-related and in dating-related contexts. However, the contributions of the social cognitive model and the rejection sensitivity model in explaining these links varied somewhat depending on the situational context of the violent behavior. The implications of the similarities and specificities in the risk factors and pathways leading to delinquency-related violence and dating violence are discussed.

Deviant peer affiliations and depression: Confounding or causation?

Data gathered from 2 longitudinal studies (the Christchurch Health and Development study of a birth cohort of 1,265 New Zealand participants studied to 21 years and the Quebec Study of 240 Canadian participants studied to 13 years) was used to examine the linkages between deviant peer affiliations and depression in adolescence. Both studies produced similar conclusions:a)increasing peer affiliations were associated with significant (p < .0001) increases in depressive symptoms;b)the associations between peer affiliations and depression could not be fully explained by confounding factors; andc)peer affiliations and depressive symptoms were linked by a causal chain process in which deviant peer affiliations led to increased externalizing behaviors with the negative conse-quences of these behaviors leading to depression.

Cross-lagged links among gambling, substance use, and delinquency from midadolescence to young adulthood: additive and moderating effects of common risk factors.

The authors examined cross-lagged links among gambling, substance use, theft, and violence from midadolescence to young adulthood and whether behavioral disinhibition, deviant peers, and parental supervision as common risk factors explain or moderate those links. In 2 community samples, male Caucasians were assessed for gambling participation and problems with the South Oaks Gambling Screen-Revised for Adolescents (K. C. Winters, R. Stinchfield, & J. Fulkerson, 1993) at age 16 years and the South Oaks Gambling Screen (H. R. Lesieur & S. B. Blume, 1987) at age 23. Other problem behaviors were also assessed both times. Risk factors were measured at age 16. Adolescent substance use was related to subsequent theft and violence but not gambling. Gambling problems were linked to subsequent gambling participation. For adolescents with deviant peers, gambling problems were linked to subsequent theft; this was not the case for adolescents without deviant peers. Only for individuals high on disinhibition did stability of gambling problems resemble moderate stabilities of other problem behaviors. Each risk factor was related to each problem behavior (exception: parenting unrelated to gambling). These risk factors partly explained the cross-lagged links among behaviors and thus may be useful targets of prevention. (PsycINFO Database Record (c) 2009 APA, all rights reserved).

Longitudinal Links between Impulsivity, Gambling Problems and Depressive Symptoms: A Transactional Model from Adolescence to Early Adulthood.

BACKGROUND Research shows high co-morbidity between gambling problems and depressive symptoms, but the directionality of this link is unclear. Moreover, the co-occurrence of gambling problems and depressive symptoms could be spurious and explained by common underlying risk factors such as impulsivity and socio-family risk. The goals of the present study were to examine 1) whether common antecedent factors explain the concurrent links between depressive symptoms and gambling problems, and 2) whether possible transactional links between depressive symptoms and gambling problems exist from late adolescence to early adulthood. METHODS A total of 1004 males from low SES areas participated in the study. RESULTS Analyses revealed a positive predictive link between impulsivity at age 14 and depressive symptoms and gambling problems at age 17. In turn, gambling problems at age 17 predicted an increase in depressive symptoms from age 17 to age 23, and depressive symptoms at age 17 predicted an increase in gambling problems from age 17 to age 23. CONCLUSIONS Common antecedent factors may explain the initial emergence of an association between depressive symptoms and gambling problems in adolescence. However, once emerged, their escalation seems to be better explained by a mutual direct influence between the two sets of disorders.

Verbal Abuse by the Teacher and Child Adjustment From Kindergarten Through Grade 6

OBJECTIVES. Many adults mention past incidences of verbal abuse by the teacher as the most overwhelming negative experience in their lives. The present study examined (1) the course and stability of verbal abuse by the teacher from kindergarten through grade 4 and (2) the link between verbal abuse by the teacher and childrens behavioral, emotional, and academic adjustment. DESIGN. Participants were 399 children (177 girls) who were assessed yearly over a period of 7 years, starting in kindergarten. Verbal abuse by the teacher, as well as acceptance versus rejection by the peer group from kindergarten through grade 4, were assessed through peer nomination. Child adjustment from kindergarten through grade 4 (antisocial behavior, attention problems, anxiety) was evaluated by the teacher. Child adjustment in early adolescence (delinquent behavior, depressive feelings, academic performance) was assessed by teacher evaluations and self-reports. RESULTS. The vast majority of children (∼85%) have almost 0 risk of becoming a target of verbal abuse by the teacher over the course of elementary school. However, a small minority of children (15%) seems to be at relatively high risk of verbal abuse by the teacher in kindergarten, and this risk increases even further over the course of elementary school. Boys, as well as children with high levels of early antisocial behavior and attention problems in kindergarten, are at high risk of verbal abuse by the teacher during elementary school. In turn, verbal abuse by the teacher is significantly related to subsequent delinquent behavior and academic difficulties in early adolescence, although this effect depends on child characteristics. CONCLUSIONS. Verbal abuse by the teacher seems to be a highly stable phenomenon for at-risk children. Children who are relatively well adjusted are at low risk of becoming the target of verbal abuse by the teacher. If they do, however, these children are the most vulnerable to subsequent developmental difficulties.

Predicting early gambling in children.

This large population-based study (N = 1,125) examined whether low inhibition (i.e., low anxiety) predicted early gambling, above and beyond disinhibition (i.e., impulsivity) and whether the two personal dispositions operated independently or interactively. It also examined whether the predictive role of these personal dispositions towards early gambling depended on parent gambling. Childrens personal dispositions were assessed at ages 6, 7, and 8 years through teacher ratings. Parent gambling participation and gambling problems were assessed when the children were 8 years old. Finally, childrens early gambling was measured through self-reports when the children were 10 years old. Results showed that teacher-rated impulsivity predicted early gambling for both genders. In addition, low anxiety predicted early gambling behavior, above and beyond impulsivity and control variables, albeit only in boys. Impulsivity and anxiety did not interact with each other, nor did they interact with parent gambling in predicting early gambling. However, parent gambling participation, but not problems, additively predicted early gambling for boys and for girls. The theoretical and practical implications of these findings are discussed.

Association of Polyaminergic Loci With Anxiety, Mood Disorders, and Attempted Suicide

Background The polyamine system has been implicated in a number of psychiatric conditions, which display both alterations in polyamine levels and altered expression of genes related to polyamine metabolism. Studies have identified associations between genetic variants in spermidine/spermine N1-acetyltransferase (SAT1) and both anxiety and suicide, and several polymorphisms appear to play important roles in determining gene expression. Methodology/Principal Findings We genotyped 63 polymorphisms, spread across four polyaminergic genes (SAT1, spermine synthase (SMS), spermine oxidase (SMOX), and ornithine aminotransferase like-1 (OATL1)), in 1255 French-Canadian individuals who have been followed longitudinally for 22 years. We assessed univariate associations with anxiety, mood disorders, and attempted suicide, as assessed during early adulthood. We also investigated the involvement of gene-environment interactions in terms of childhood abuse, and assessed internalizing and externalizing symptoms as endophenotypes mediating these interactions. Overall, each gene was associated with at least one main outcome: anxiety (SAT1, SMS), mood disorders (SAT1, SMOX), and suicide attempts (SAT1, OATL1). Several SAT1 polymorphisms displayed disease-specific risk alleles, and polymorphisms in this gene were involved in gene-gene interactions with SMS to confer risk for anxiety disorders, as well as gene-environment interactions between childhood physical abuse and mood disorders. Externalizing behaviors demonstrated significant mediation with regards to the association between OATL1 and attempted suicide, however there was no evidence that externalizing or internalizing behaviors were appropriate endophenotypes to explain the associations with mood or anxiety disorders. Finally, childhood sexual abuse did not demonstrate mediating influences on any of our outcomes. Conclusions/Significance These results demonstrate that genetic variants in polyaminergic genes are associated with psychiatric conditions, each of which involves a set of separate and distinct risk alleles. As several of these polymorphisms are associated with gene expression, these findings may provide mechanisms to explain the alterations in polyamine metabolism which have been observed in psychiatric disorders.

Peer and Teacher Effects on the Early Onset of Sexual Intercourse

OBJECTIVES We examined the links between peer rejection and verbal abuse by a teacher during childhood with the early onset of sexual intercourse and the mediating role of delinquent behavior and low self-esteem in this context. METHODS We assessed 312 students (159 girls) in northwestern Quebec annually from kindergarten through seventh grade. Peer identifications were used to assess peer rejection and verbal abuse by teachers from kindergarten through fourth grade. In seventh grade, self-reports were used to assess delinquent behavior, self-esteem, and having sexual intercourse. Multiple sources were used to assess control variables. RESULTS Multiple imputation-based linear and logistic regressions showed that peer rejection was indirectly associated with a higher risk of early intercourse by its link with lower self-esteem, but only for girls. Verbal abuse by teachers during childhood was directly associated with a higher risk of early sexual intercourse and indirectly by its link with delinquent behavior. CONCLUSIONS The results underline the importance of both peers and teachers in healthy sexual development among youths, especially for girls, and emphasize the need for targeted health and sexual education programs.

Disruptiveness, peer experiences and adolescent smoking: a long-term longitudinal approach.

AIMS This study examined links of peer experiences (i.e. social status and affiliation with disruptive peers) throughout childhood with respect to adolescent smoking trajectories, after controlling for childhood disruptiveness. Specifically, we tested four models regarding links of peer experiences and deviant behaviours. DESIGN Prospective community sample. PARTICIPANTS A total of 312 children, aged 6.17 years at baseline. MEASUREMENTS Growth parameters of own disruptive behaviour, disruptive behaviour of friends and social status measured at ages 7-12 years as predictors of smoking assessed at ages 13-15 years, while controlling for own disruptive behaviour at age 6 years. FINDINGS We found three groups with distinct profiles of smoking. One group displayed hardly any or no smoking at all; a second group showed a trajectory of increased smoking; and a third group that showed high smoking rates initially and increased in smoking intensity over time. Results support the assumption of the selection model that the link between disruptive peers and smoking is spurious and due to shared variances with own early disruptiveness. Moreover, support was found for the popularity-socialization model supporting the assumption that age-related increases in social status are associated with smoking. CONCLUSIONS The findings emphasize that early disruptiveness is predictive of later smoking. In addition, it was shown that smoking becomes less deviant over time, in line with group norms. Future prevention programmes should emphasize the need to change these norms.