Direct and Indirect Effects of Adolescent Self-Control of Emotions and Behavioral Expression on Adult Health Outcomes

In the ongoing Jyväskylä Longitudinal Study of Personality and Social Development, we examined the direct and indirect effects of self-control of emotions and behavioral expression, as rated by teachers at age 14, on various self-reported health outcomes at age 36 in 123 women and 129 men. The relation between independent and dependent variables was expected to be mediated by health-related behaviors at age 36 (exercise, tobacco use, heavy drinking). Path analysis showed that, in men, low self-control of emotions was linked to self-assessed poor health and physical symptoms indirectly via health-risk behaviors, but directly to disabilities. Behavioral expression at age 14, indexed by social activity, was directly linked to disabilities. In women, behavioral expression was unrelated to health outcomes, but low self-control of emotions was indirectly linked to self-assessed poor health, physical symptoms, and disabilities via health-risk behaviors.     

Associations between personality traits and psychological well-being across time in middle adulthood

Associations of personality traits with psychological well-being (PWB) were analyzed across ages 33–50 as part of an ongoing Finnish longitudinal study (initial N = 369). Bivariate latent growth curve analyses indicated that a low initial level of neuroticism (.75) and high extraversion (.55) correlated strongly with a high level of PWB. Moreover, a high level of conscientiousness, openness, and agreeableness also correlated significantly with PWB. The change factor was significant only for openness: the higher the initial level of PWB, the higher the increase in openness from age 33–50. In comparison with emotional well-being, indicated by general life satisfaction, the associations of the personality traits with PWB were significantly stronger for neuroticism, extraversion, and openness.     

Understanding the Covariation Among Childhood Externalizing Symptoms: Genetic and Environmental Influences on Conduct Disorder,Attention Deficit Hyperactivity Disorder,and Oppositional Defiant Disorder Symptoms

Conduct disorder (CD), attention deficit hyperactivity disorder (ADHD), and oppositional defiant disorder (ODD) are common childhood externalizing disorders that frequently co-occur. However, the causes of their comorbidity are not well understood. To address that question, we analyzed data from > 600 Finnish twin pairs, who completed standardized interviews at age 14. Behavior genetic methods were used to examine how genetic/environmental factors contribute to each disorders symptoms and to their covariation. We found significant genetic effects on each disorder with only modest evidence of shared environmental influences. Our data suggest the comorbidity among CD, ADHD, and ODD is primarily explained by shared genetic influences; however, each disorder was also under unique genetic influence, supporting the distinction of each disorder.     

Self-esteem: An antecedent or a consequence of social support and psychosomatic symptoms? Cross-lagged associations in adulthood

This study investigated the relationships of self-esteem with social support and psychosomatic symptoms in cross-lagged longitudinal data with two measurement points and a time lag of 6 years. Two hundred thirteen participants were drawn from the ongoing Jyväskylä Longitudinal Study of Personality and Social Development, Finland. The present study focused on data collected by questionnaires at ages 36 and 42. The cross-lagged analyses of Structural Equation Modeling (SEM) indicated that high self-esteem at age 36 predicted high social support 6 years later and simultaneously, but to a lesser extent, high social support at age 36 predicted high self-esteem at age 42. In addition, low levels of psychosomatic symptoms at age 36 were associated with high self-esteem 6 years later, but not vice versa.     

Sex differences in genetic and environmental effects on aggression

The aim of the present study was to investigate the genetic and environmental factors influencing teacher and parental rated aggression in boys and girls, asking whether the magnitude of these effects is similar across rater and sex. The study is part of an ongoing nationwide twin‐family study of behavioral development and health habits carried out in Finland. The sample consisted of 1651 twin pairs (264 monozygotic male, 300 monozygotic female, 292 dizygotic male, 278 dizygotic female, and 517 dizygotic opposite‐sex twin pairs), representing subsets of five 11‐ to 12‐year‐old twin cohorts (b. 1983–1987). The data were collected using the teacher and parental rating forms of the Multidimensional Peer Nomination Inventory. Structural equation models of sex‐limitation assessed sex differences in genetic and environmental influences on aggression. The results suggested significant genetic, common environmental, and specific environmental effects on aggression in both boys and girls, but the best fitting model differed depending on the informant. For both ratings, boys showed lower levels of heritability and higher levels of common environment than girls. In addition, the teacher rating data also suggested the presence of either sex‐specific common environmental effects or sex‐specific genetic effects. Support is provided also for sibling contrast effects, either at the behavioral level or as a rater bias. Aggr. Behav. 29:55–68, 2003. © 2003 Wiley‐Liss, Inc.     

Sense of agency in narrative processes of repeatedly convicted drunk drivers

The study examines sense of agency as this appears in the narratives of two repeatedly convicted drunk drivers during the five-hour counselling sessions. The cases were chosen from a total of 30 cases, as representing the opposite polar types of action stories. Analysis of narrative processes showed the narrators' drunk driving (DD) as opposite solutions relating to conflicts concerning their sense of agency; for the NON-AGENTIVE CLIENT (NAC) DD as a compulsive action solution represented an abandonment of her agentive position, while for the STRONGLY-AGENTIVE CLIENT (SAC) consciously chosen DD represented an attempt to assert his personal autonomy. DD provided only a momentary sense of relief from the position of agency for the NAC, and only a momentary sense of autonomy for the SAC. The clients processed differently these agentive positions. The narration of the NAC was a stable process of alternativeness throughout the counselling sessions and repeated sense of absent agency. The narration of the SAC began as controlled process that strove to avoid the issue of DD, but during the sessions it changed, as the narrator switched from regarding himself as the counsellor's opponent, to regarding himself as a participant and responsible agent.