Phil A. Silva

Development of Depression From Preadolescence to Young Adulthood: Emerging Gender Differences in a 10-Year Longitudinal Study

The authors investigated the emergence of gender differences in clinical depression and the overall development of depression from preadolescence to young adulthood among members of a complete birth cohort using a prospective longitudinal approach with structured diagnostic interviews administered 5 times over the course of 10 years. Small gender differences in depression (females greater than males) first began to emerge between the ages of 13 and 15. However, the greatest increase in this gender difference occurred between ages 15 and 18. Depression rates and accompanying gender differences for a university student subsample were no different than for a nonuniversity subsample. There was no gender difference for depression recurrence or for depression symptom severity. The peak increase in both overall rates of depression and new cases of depression occurred between the ages of 15 and 18. Results suggest that middle-to-late adolescence (ages 15-18) may be a critical time for studying vulnerability to depression because of the higher depression rates and the greater risk for depression onset and dramatic increase in gender differences in depression during this period.

Gender Differences in Partner Violence in a Birth Cohort of 21-Year-Olds: Bridging the Gap Between Clinical and Epidemiological Approaches

This study describes partner violence in a representative sample of young adults. Physical violence perpetration was reported by 37.2% of women and 21.8% of men. Correlates of involvement in severe physical violence differed by gender. Severe physical violence was more strongly associated with unemployment, low educational attainment, few social support resources, polydrug use, antisocial personality disorder symptoms, depression symptoms, and violence toward strangers for men than for women. Women who were victims of severe physical violence were more likely than men who were victims to experience symptoms of anxiety. The findings converge with community studies showing that more women than men are physically violent toward a partner and with clinical studies highlighting violence perpetrated against women by men with deviant characteristics.

Early failure in the labor market : Childhood and adolescent predictors of unemployment in the transition to adulthood

The authors investigate the childhood and adolescent predictors of youth unemployment in a longitudinal study of young adults who have been studied for the 21 years since their births in 1972-1973. They test hypotheses about the predictors of youth unemployment using information about each individuals human capital, social capital, and personal capital. In the human capital domain, lack of high-school qualifications, poor reading skills, low IQ scores, and limited parental resources significantly increased the risk of unemployment. In the social capital domain, growing up in a single-parent family, family conflict, and lack of attachment to school also increased the risk of unemployment. In the personal capital domain, children involved in antisocial behavior had an increased risk of unemployment. These predictors of unemployment reached back to early childhood, suggesting that they began to shape labor-market outcomes years before these youths entered the work force. In addition, these effects remained significant after controlling for the duration of education and educational attainment, suggesting that many early personal and family characteristics affect labor-market outcomes, not only because they restrict the accumulation of human capital (e.g., education), but also because they directly affect labor-market behaviors. Failure to account for prior social, psychological, and economic risk factors may lead to inflated estimates of the effects of unemployment on future outcomes

Personality differences predict health-risk behaviors in young adulthood: evidence from a longitudinal study.

In a longitudinal study of a birth cohort, the authors identified youth involved in each of 4 different health-risk behaviors at age 21: alcohol dependence, violent crime, unsafe sex, and dangerous driving habits. At age 18, the Multidimensional Personality Questionnaire (MPQ) was used to assess 10 distinct personality traits. At age 3, observational measures were used to classify children into distinct temperament groups. Results showed that a similar constellation of adolescent personality traits, with developmental origins in childhood, is linked to different health-risk behaviors at 21. Associations between the same personality traits and different health-risk behaviors were not an artifact of the same people engaging in different health-risk behaviors; rather, these associations implicated the same personality type in different but related behaviors. In planning campaigns, health professionals may need to design programs that appeal to the unique psychological makeup of persons most at risk for health-risk behaviors.

Adult physical health outcomes of adolescent girls with conduct disorder, depression, and anxiety.

OBJECTIVE To examine the young adult physical health outcomes of adolescent girls with behavior problems. METHOD Girls with conduct disorder, girls with depression, girls with anxiety, and healthy girls (N = 459) who had been evaluated at age 15 years were followed up at age 21, when general physical health, substance dependence, and reproductive health were assessed. RESULTS After control for potentially confounding variables including prior health, adolescent conduct disorder predicted more medical problems, poorer self-reported overall health, lower body mass index, alcohol and/or marijuana dependence, tobacco dependence, daily smoking, more lifetime sexual partners, sexually transmitted disease, and early pregnancy. Adolescent depression predicted only adult tobacco dependence and more medical problems; adolescent anxiety predicted more medical problems. CONCLUSIONS The robust link between female adolescent conduct disorder and poor physical health in adulthood suggests that intervention with girls who have conduct disorder may be a strategy for preventing subsequent health problems.

Developmental antecedents of partner abuse: a prospective-longitudinal study

Prospective measures of risk factors for partner abuse were obtained from a large birth cohort in 4 domains: socioeconomic resources, family relations, educational achievements, and problem behaviors. Partner abuse outcomes were measured at age 21. Results showed that antecedents of abuse included risk factors from all 4 domains. Risk factors were similar for men and women. Some age 3 antecedents were significant, but the strongest correlations were from age 15. In multivariate analyses, the most consistent predictor was the presence of early problem behaviors. In a cross-validation tests, abuse was moderately predictable by the same antecedents, whether the outcome measure was self-report or reports from partners of sample members. Findings suggest that theories of partner abuse should account for developmental influences from multiple life domains and that primary prevention of partner abuse should begin in adolescence.

Do Partners Agree about Abuse in Their Relationship? A Psychometric Evaluation of Interpartner Agreement.

This study tested whether partners can be relied on to provide congruent reports about abuse in their relationship. The authors examined whether interpartner agreement (IA) varies as a function of whether the perpetrator is the man or the woman, and by whether the abusive behavior being reported is physical or psychological. Guided by psychometric test theory, the authors examined whether weak IA about specific behaviors can be improved by aggregating behavior items into scales and by controlling for random measurement error. A representative sample of 360 young couples was studied. IA did not vary with the perpetrators gender or with the nature of the abusive behaviors, but victims (both men and women) reported somewhat more abuse than did their perpetrators. IA about specific abusive behaviors was only poor to fair, but it became very good when items were aggregated into scales and even better when measurement errors were removed from the reports. The findings suggest that reports of abuse can be aggregated to form internally consistent scales that show strong IA, thereby fulfilling criteria for reliability. Moreover, under research conditions that guarantee confidentiality, either abuser reports or victim reports are suitable methods for use in research on partner abuse.

First sexual intercourse: age, coercion, and later regrets reported by a birth cohort.

Abstract Objectives: To investigate how age at first sexual intercourse is related to the reported circumstances and to determine how these corresponded to views in early adulthood about its timing. Design: Cross sectional study within a birth cohort using a questionnaire presented by computer. Setting: Dunedin, New Zealand in 1993-4. Subjects: 477 men and 458 women enrolled in the Dunedin Multidisciplinary Health and Development Study, comprising 92% of survivors of the cohort. Results: The median age at first intercourse was 17 years for men and 16 years for women. Only one man (0.2%) but 30 (7%) women reported being forced to have intercourse on the first occasion. For women, there were increasing rates of coercion with younger age at first intercourse. More men than women reported that they and their partner were equally willing (77% (316/413) v 53% (222/419)). Mutual willingness of both partners was greater for those who reported that it was also the first time for their partner. Timing of first intercourse was considered about right by 49% (200/411) of men and 38% (148/388) of women. Many women (54% (211/388) reported that they should have waited longer, and this rose to 70% (90/129) for women reporting intercourse before age 16. Conclusions: Most women regretted having sexual intercourse before age 16. First intercourse at younger ages is associated with risks that are shared unequally between men and women. This information is important to young people themselves. Key messages We questioned a cohort of young New Zealand adults about the circumstances of their first sexual intercourse and their views about the timing of first intercourse Median age at first intercourse was 17 years for men and 16 years for women. Being forced at first intercourse was commonly reported by women, especially those who experienced intercourse before age 14, and most women who had intercourse before age 16 reported that they should have waited longer More men than women said that both they and their partner were equally willing at first intercourse, and reporting of equal willingness was greater among those who reported that it was also the first sexual intercourse for their partner As well as pronounced gender differences in mutual willingness and retrospective views of appropriate timing, more women reported occurrence of sexually transmitted disease, especially among those who had intercourse before age 16

Evidence for a non-associative model of the acquisition of a fear of heights

Theories that fear results from previous traumatic experience (i.e. conditioning theories) have enjoyed widespread support for over half a century. Recent research, however, has cast doubt on the validity of these models in some specific phobias. Two studies on the etiology of height phobia have obtained findings consistent with a non-associative, evolutionary explanation of fear acquisition (Menzies and Clarke, 1993a, Behaviour Research and Therapy, 31, 355-365; Menzies and Clarke, 1995a, Behaviour Research and Therapy, 33, 795-805). Unfortunately, the retrospective nature of these studies limits the conclusions that can be drawn from these data. Like all retrospective research, these studies depend on adult subjects imperfect ability to recall conditioning events that may have occurred many years earlier. The present investigation overcomes these methodological shortcomings by examining the relationship between putative conditioning events before the age of 9 yr and the presence of height fear at ages 11 and 18 yr in a large birth cohort studied longitudinally. To our knowledge this is the first study that has prospectively examined the relationship between relevant traumatic events early in life and the onset of height fear in late adolescence. No positive relationship was found between a history of falls resulting in injury (i.e. fracture, dislocation, intracranial injury or laceration) before the age of 9 and fear of heights at age 11 or 18. Interestingly, falls resulting in injury between the ages of 5 and 9 occurred more frequently in those without a fear of heights at 18 (P < 0.01)--a finding in the opposite direction to that predicted by conditioning theory but consistent with non-associative theories of fear acquisition. In general, the results provide strong support for non-associative models of fear and are difficult to reconcile with conditioning theories.

Factors Associated with Doubled‐Up Housing—a Common Precursor to Homelessness

Previous research on housing problems has concentrated on the more visible homeless‐ness rather than more intermediate forms of housing problems such as doubled‐up housing. This article expands this research by analyzing entrance into doubled‐up housing among a sample of adolescents. This common type of vulnerable housing has been linked to various social and psychological problems. It commonly precedes homeless‐ness, and it potentially increases the risk of homelessness. We find that doubled‐up housing frequently occurs during young adulthood and is predicted by insufficient human capital, broken social ties, and personal disabilities.