Cigarette smoking and depressive symptoms: a longitudinal study of adolescents and young adults

Cigarette smoking and depressive symptoms have been shown to be related in previous research. This paper examined the relationship between cigarette smoking and depressive symptoms in a longitudinal sample of 688 adolescents and young adults through surveys conducted over 13 yr. The results indicate that a history of earlier cigarette smoking in adolescence predicts later depressive symptoms in the late twenties. The study also suggests that depressive symptoms during adolescence predict cigarette smoking in the late twenties but not above and beyond prior smoking. These results help clarify and expand current knowledge on the links between cigarette smoking and depression. The results point to several clinical implications for treatment of both cigarette smoking and depressive symptoms among both adolescents and young adults.     

Learning to minimize energy costs and maximize mechanical work in a bimanual coordination task

The authors addressed the hypothesis that economy in motor coordination is a learning phenomenon realized by both reduced energy cost for a given workload and more external work at the same prepractice metabolic and attentional energy expenditure. "Self-optimization" of movement parameters has been proposed to reflect learned motor adaptations that minimize energy costs. Twelve men aged 22.3 -/+ 3.9 years practiced a 90 degrees relative phase, upper limb, independent ergometer cycling task at 60 rpm, followed by a transfer test of unpracticed (45 and 75 rpm) and self-paced cadences. Performance in all conditions was initially unstable, inaccurate, and relatively high in both metabolic and attentional energy costs. With practice, coordinative stability increased, more work was performed for the same metabolic and attentional costs, and the same work was done at a reduced energy cost. Self-paced cycling was initially below the metabolically optimal, but following practice at 60 rpm was closer to optimal cadence. Given the many behavioral options of the motor system in meeting a variety of everyday movement task goals, optimal metabolic and attentional energy criteria may provide a solution to the problem of selecting the most adaptive coordination and control parameters.     

Factor structure and use of the hospital anxiety and depression scale in the homeless and socially marginalized

The homeless have been identified as a group at risk of significant anxiety and depression and screening is therefore highly desirable to identify those needing psychological and psychiatric support. However, the psychometric properties of routine screening instruments have yet to be established in this group. This study sought to determine the psychometric properties of the widely used Hospital Anxiety and Depression Scale in this group. Using a cross-sectional design, 314 clients presenting at homelessness units (shelters) supported by The Salvation Army were administered the HADS. Confirmatory factor analysis revealed three-factor models offered the best fit to the data (best-fit model CFI = .98, RMSEA = .06, WRMR = .87). This investigation confirms contemporary research findings that the HADS comprises an underlying tri-dimensional factor structure. However, the internal consistency of the HADS anxiety (alpha = .81) and depression (alpha = .90) sub-scales was excellent. The findings of the current study suggest that the HADS is a suitable screening tool in this group.     

A comparison of thought suppression to an acceptance-based technique in the management of personal intrusive thoughts: a controlled evaluation

Research suggests that suppressing unwanted thoughts is not possible, leads to a subsequent increase in frequency of the suppressed thoughts, and results in higher levels of distress. Because thought suppression may have negative effects, an alternative, acceptance-based approach has been proposed. The current paper reports the outcomes of two studies. Study I examined the relationships between two naturally occurring strategies of thought management (thought suppression and acceptance), symptoms of psychopathology, and experiences with personally relevant intrusive thoughts. Results showed that those who naturally suppress personally relevant intrusive thoughts have more, are more distressed by, and have a greater "urge to do something" about the thoughts, while those who are naturally more accepting of their intrusive thoughts are less obsessional, have lower levels of depression, and are less anxious. Study II compared three groups (thought suppression, acceptance, and monitor-only groups) on the frequency and distress associated with experiencing personally relevant intrusive thoughts. Results revealed that those instructed to suppress their personal intrusive thoughts were unable to do so and experienced an increased level of distress after suppression, whereas those instructed to use an acceptance-based strategy experienced a decrease in discomfort level (but not thought frequency) after having used such a strategy. These data offer initial evidence that acceptance may be a useful alternative to the suppression of personally relevant intrusive thoughts.     

Dramatic-erratic personality disorder symptoms: I. Continuity from early adolescence into adulthood

This longitudinal study examined dramatic-erratic personality disorder symptoms (histrionic, borderline, and narcissistic symptoms) in a community sample of 407 adolescents to assess whether this diagnostic construct is meaningful in young people. Based on latent variable models and dimensional symptom scales, these so-called Cluster B symptoms were highly stable across an eight-year interval from early adolescence to early adulthood. Furthermore, when compared with internalizing and externalizing symptoms, dramatic-erratic symptoms were more stable over time than these well-established Axis I symptom clusters. Based on high correlations with co-occurring internalizing and externalizing symptoms, Cluster B symptoms clearly reflect emotional distress during adolescence. These analyses reinforce recent efforts to establish personality disorders as a clinically significant and valid diagnostic construct in young people.     

Dramatic-erratic personality disorder symptoms: II. Developmental pathways from early adolescence to adulthood

This study examined the relationship over time between Cluster B personality disorder symptoms (borderline, histrionic, and narcissistic symptoms) and comorbid internalizing and externalizing symptoms in a community sample of 407 adolescents. Cross-lagged longitudinal models tested (a) the hypothesis that Cluster B symptoms reflect primary disturbances that give rise to co-occurring internalizing and externalizing symptoms; and (b) the alternative hypothesis that these Axis I symptom clusters reflect primary problems that interfere with normal personality development. Internalizing and externalizing symptoms each predicted subsequent Cluster B symptoms in girls, although these effects occurred only at specific developmental stages. Cluster B symptoms in boys and girls at ages 10 to 14 years predicted externalizing symptoms two years later. Instead of clearly supporting one hypothesis over the other, longitudinal models suggested gender-specific developmental effects that were partially consistent with both hypotheses.     

Emotional reactivity and risk for psychopathology among adolescents

Various aspects of personality or dispositional style predict risk for psychiatric disorders among adults. In particular, signs of neuroticism, emotional reactivity, or sensitivity to stress are strong predictors of later mood or anxiety disorders. The current report extends this literature to adolescents. An epidemiologic sample of 776 young people living in upstate New York received psychiatric assessments based on the Diagnostic and Statistical Manual of Mental Disorders, Third Edition-Revised, (DSM-III-R) and a self-report assessment of personality style in 1983 and 1985. Psychopathology was again assessed in 1992. The current study first examined demographic correlates of emotional reactivity. The study then considered the predictive relationship between emotionally reactive personality style at one study wave and psychopathology at later waves. In middle but not early adolescence, girls showed higher levels of emotional reactivity than boys. In turn, high levels of emotional reactivity predicted a range of psychiatric disorders at follow-up. The most consistent associations emerged for major depression and fearful spells, a term the authors use to describe a subclinical form of panic attacks. As in adults, midadolescent girls rate themselves as more emotionally reactive than midadolescent boys. Moreover, adolescents who rate themselves as emotionally reactive face a high risk for mood and anxiety disorders. High levels of emotional reactivity may represent a manifestation of underlying neurobiologic risk for mood and anxiety disorders.     

Implications of Identification with Parents and Parents' Acceptance for Adolescent and Young Adult Self-esteem

Although several authors have suggested that youths' identification with their parents plays an important role in how they come to evaluate themselves, this hypothesis has not been explored empirically in longitudinal research. Using prospective data from a representative community sample, we tested whether the association between adolescents' identification with mother and father and subsequent gains in global self-esteem would hinge on the parent's acceptance or rejection of the adolescent. Results showed that male adolescents' self-esteem consistently improved the more they identified with their parents. Among female adolescents, the change in self-esteem associated with parental identification depended on the parent's evaluation of them, suggesting that identifying with a rejecting parent presents a particular vulnerability for low self-esteem in young women.     

Aggression in Toddlers: Associations With Parenting and Marital Relations

This study examined the relation among parenting factors, marital relations, and toddler aggression. A structured questionnaire was administered to both parents of 254 2-year-olds. The authors used correlation and hierarchical multiple regression analyses to assess the extent to which certain personality traits, drug use, parenting style, and marital conflicts were related to the toddlers' aggressive behavior. Results showed that the maternal child-rearing and parental aggression domains had a direct effect on toddler aggression. The domain of maternal child rearing also served as a mediator for the domains of marital relations, paternal child rearing, parental aggression, and parental drug use. The findings indicated that maternal child-rearing practices, personality attributes, and drug use were more important than paternal attributes in relation to toddler aggression. Implications for prevention among families at risk are discussed.     

Childhood Aggression,Adolescent Delinquency,and Drug Use: A Longitudinal Study

The interrelation of childhood aggression, early and late adolescent delinquency, and drug use was explored. Data were obtained for the subjects when they were 5–10 years old. Follow-up interviews were conducted when the subjects were between 13–18 years old and again when they were 15–20 years old. A LIS-REL analysis of the three waves of data indicated that childhood aggression is a precursor of adolescent drug use and delinquency, and that early adolescent drug use is correlated with contemporaneous delinquency as well as with later drug use and delinquency.