Covariances between regression coefficient estimates in a single mediator model

This study presents formulae for the covariances between parameter estimates in a single mediator model. These covariances are necessary to build confidence intervals (CI) for effect size measures in mediation studies. We first analytically derived the covariances between the parameter estimates in a single mediator model. Using the derived covariances, we computed the multivariate‐delta standard errors, and built the 95% CIs for the effect size measures. A simulation study evaluated the accuracy of the standard errors as well as the Type I error, power, and coverage of the CIs using various parameter values and sample sizes. Finally, we presented a numerical example and a SAS MACRO that calculates the CIs for the effect size measures.     

A Comparison Between Mexican American Youth Who Are in Gangs and Those Who Are Not

This exploratory study compares the differences between 43 Mexican American gang members and 43 Mexican American adolescents who are not members of a gang on several demographic, educational, familial, cultural, and psychological variables. Differences were analyzed using t tests and chi‐square analyses. Discussion focuses on implications for counseling. Este estudio de exploración compara las diferencias entre 43 Mexicoamericanos pertenecientes a alguna pandilla y 43 adolescentes Mexicoamericanos que no son miembros de una pandilla según distintas variables demográficas, educativas, familiares, culturales y psicológicas. Las diferencias se analizaron usando pruebas t y análisis de ji‐cuadrado. La discusión se centra en las implicaciones para la consejería.     

Maternal pre‐ and postnatal anxiety and infant temperament. The generation R study

The aim of this study was to investigate whether maternal anxiety that is temporary or chronic during the pre‐ and postnatal period predicts infant temperament. Mothers of 2997 infants in a population‐based birth cohort reported levels of pregnancy‐specific anxiety (Pregnancy Outcome Questionnaire) and general anxiety symptoms (Brief Symptom Inventory) prenatal and at 6 months postnatal. Temperament characteristics were assessed by maternal report using the Infant Behavior Questionnaire—Revised when the infants were 6 months of age. Maternal pregnancy‐specific and general anxiety during the pre‐ and postnatal period were all independently associated with perceived infant temperamental difficulties. Chronically high maternal anxiety predicted the highest perceived infant activity level and negative affectivity. These findings show that different forms of maternal anxiety during both the pre‐ and postnatal period are independently related to perceived temperamental problems in infancy. They also emphasize the significance of chronic maternal anxiety for infant mental health. Copyright © 2009 John Wiley & Sons, Ltd.     

Evaluative priming from subliminal emotional words: Insights from event-related potentials and individual differences related to anxiety

The present ERP study investigated effects of subliminal emotional words on preference judgments about subsequent visual target stimuli (paintings, portraits). Each target was preceded by a masked 17-ms emotional adjective. Four classes of prime words were distinguished according to the combinations of positive/negative valence and high/low arousal. Targets were liked significantly more after positive-arousing primes (e.g., happy), relative to negative-arousing (brutal), positive-nonarousing (mild), and negative-nonarousing primes (lazy). In the target ERP, amplitude of right-hemisphere positive slow wave was increased after positive-arousing compared to negative-arousing primes. Evaluative priming effects on judgments and ERPs were more pronounced in high state-anxious participants. The results suggest that (1) there is indeed affective/semantic processing of unconscious words, (2) evaluative priming operates relatively late during target processing, (3) to be effective, prime words need to score high on the arousal dimension, and (4) individual differences in state anxiety modulate the susceptibility to subliminal evaluative priming.     

Developmental Trajectories of Chinese Children’s Relational and Physical Aggression: Associations with Social-Psychological Adjustment Problems

The purpose of this short-term longitudinal study was to examine Chinese children's trajectories of physical and relational aggression and their association with social-psychological adjustment problems (i.e., depressive symptoms and delinquency) and gender. Fourth and fifth grade children in Taiwan (n?=?739, age 9-11) were followed across 1?year. Results of Linear Mixed Models demonstrated that, on average, relational aggression increased in a linear fashion for fifth grade children and girls and physical aggression remained stable for boys and increased linearly for fifth grade girls. Further, increases in relational aggression were associated with time-dependent increases in depressive symptoms, and the effect size of this association seemed to be stronger than that of physical aggression. Findings are discussed in the context of Chinese culture.     

Counseling in Switzerland: Past,Present, and Future

The authors review counseling in Switzerland and compare it with counseling in the United States. They evaluate the role of professional associations and programs and argue that the evolution of counseling is situated within the history and economic, social, and political systems of Switzerland. Findings suggest that Swiss counselors are ready to reach out, evolve, and learn from mental health professionals around the world and to adopt best practices so as to work with those in need.