Delinquent peer affiliation and conduct problems: A twin study

Many putative environmental risks correlate with individuals' genotypes. The association between delinquent peer affiliation and conduct problems may occur because of shared genetic liability. Five hundred fifty three monozygotic and 558 dizygotic twin pairs, aged 11 to 18 years, were assessed for delinquent peer affiliation and conduct problems. The authors investigated whether genes contribute to both delinquent peer affiliation and the correlation between delinquent peer affiliations and conduct problems. Delinquent peer affiliation was influenced by genetic, shared environmental, and nonshared environmental factors; genetic factors also contributed to the correlation between delinquent peer affiliations and conduct problems, providing evidence for genotype-environment correlation. The magnitude of the genetic variance of conduct problems was contextually dependent on levels of delinquent peer affiliation and was greater at higher levels of delinquent peer affiliation.     

Acculturation, communication patterns, and self-esteem among Asian and Caucasian American adolescents

This study examined level of acculturation, openness in communication with parents, peer interaction, and self-esteem in two ethnic groups-Asian and Caucasian American adolescents who grew up in the same neighborhood. The findings provide evidence of significant ethnic differences in behavioral patterns, peer networks, family contexts, and levels of self-esteem. In general, Asian adolescents expressed more difficulty discussing problems with their parents when compared to their Caucasian counterparts. Further, self-esteem was found to be significantly lower among Asians than Caucasians. Implications for the provision of mental health services are discussed.     

Testing hypotheses regarding the causes of comorbidity: examining the underlying deficits of comorbid disorders

The authors examined the validity of a method commonly used to test alternative hypotheses regarding the causes of comorbidity: the examination of underlying deficits of comorbid disorders. The authors simulated data in which the true causes of comorbidity were known, then compared the patterns of underlying deficits of the comorbid disorders found in the simulated data with the predicted results. The method of examining the underlying deficits of comorbid disorders could distinguish between several comorbidity models, including those that could not be distinguished well using other methods. The ability to distinguish the correct model decreased as the sample size and the correlation between the underlying deficits and the symptom scores decreased, suggesting that the issue of power should be considered carefully.     

Association between Depressive Symptoms and Negative Dependent Life Events from Late Childhood to Adolescence

The association between stressful life events and depression has been consistently supported in the literature; however, studies of the developmental trajectories of these constructs and the nature of their association over time are limited. We examined trajectories of depressive symptoms and negative dependent life events and the associations between these constructs in a sample of 916 youth assessed annually from age 9 to 16, using latent growth curve modeling. Youth depressive symptoms, as rated by youth, parents, and teachers, decreased from late childhood into adolescence, whereas rates of youth-rated life events did not change significantly over time. Initial levels of depressive symptoms were positively associated with initial levels of life events. Furthermore, after controlling for the initial association between the two constructs, increases in depressive symptoms (as assessed by parents and youth) were positively associated with increases in life events over time. The study builds on prior research by focusing specifically on negative dependent life events, examining results across multiple informants, and employing latent growth curve modeling to evaluate associations between trajectories of life events and depressive symptoms in a longitudinal adolescent sample. Additional studies employing latent growth modeling to examine the changes in this association during adolescence are needed.     

The Three‐Component Model of Organisational Commitment: An Application to South Korea

We conducted two studies to determine whether the three‐component model of organisational commitment (Meyer & Allen, 1991) is generalisable to a non‐Western culture using data from South Korea. In Study 1, we found that when the 6‐item versions of the scales (Meyer, Allen, & Smith, 1993) were translated into Korean, the psychometric properties of the Affective Commitment Scale were similar to those found in North America, but problems were identified in the Continuance and Normative Commitment Scales. In Study 2, we found that these problems could be overcome by adopting a revised set of items written in North America. The new scales demonstrated good psychometric properties in terms of factorial validity, internal consistency, and criterion‐related validity with respect to turnover intention. We concluded that the three commitment constructs are likely to generalise to non‐Western cultures, but that there might be a need to refine the measures for cross‐cultural research.     

Harm inflation: Making sense of concept creep

ABSTRACT

“Concept creep” is the gradual semantic expansion of harm-related concepts such as bullying, mental disorder, prejudice, and trauma. This review presents a synopsis of relevant theoretical advances and empirical research findings on the phenomenon. It addresses three fundamental questions. First, it clarifies the characterisation of concept creep by refining its theoretical and historical dimensions and presenting studies investigating the change in harm-related concepts using computational linguistics. Second, it examines factors that have caused concept creep, including cultural shifts in sensitivity to harm, societal changes in the prevalence of harm, and intentional meaning changes engineered for political ends. Third, the paper develops an account of the consequences of concept creep, including social conflict, political polarisation, speech restrictions, victim identities, and progressive social change. This extended analysis of concept creep helps to understand its mixed implications and sets a multi-pronged agenda for future research on the topic.     

ADULT READING HABITS AND PATTERNS

This study was designed to examine the reading habits and patterns of White and Asian American adults. It presents an analysis of 115 adult responses to a questionnaire about their reading habits and patterns. Specifically, it was hypothesized that when grouped by demographic variables, participants' responses about their reading habits and patterns would not differ. The t test and chi-square analyses were used to test significance of differences between subjects. Differences were found between the groups for reading habits and for reading patterns. Pearson r values were calculated to determine relationships between participants' reading habits and patterns. Both positive and negative relationships were found. Additionally, through multiple regression analyses, it was determined that gender, race, and education were predictors for participants' reading habits; education and race were predictors for reading patterns.