Early Adolescent Growth in Depression and Conduct Problem Symptoms as Predictors of Later Substance Use Impairment

Most studies of adolescent substance use and psychological comorbidity have examined the contributions of conduct problems and depressive symptoms measured only at particular points-in-time. Yet, during adolescence, risk factors such as conduct problems and depression exist within a developmental context, and vary over time. Though internalizing and comorbid pathways to substance use have been theorized (Hussong et al. Psychology of Addictive Behaviors 25:390-404, 2011), the degree to which developmental increases in depressive symptoms and conduct problems elevate risk for substance use impairment among adolescents, in either an additive or potentially a synergistic fashion, is unclear. Using a school-based sample of 521 adolescents, we tested additive and synergistic influences of changes in depressive symptoms and conduct problems from 6th to 9th grade using parallel process growth curve modeling with latent interactions in the prediction of late adolescent (12th grade) substance use impairment, while examining gender as a moderator. We found that the interaction between growth in depression and conduct disorder symptoms uniquely predicted later substance use problems, in addition to main effects of each, across boys and girls. Results indicated that adolescents whose parents reported increases in both depression and conduct disorder symptoms from 6th to 9th grade reported the most substance use-related impairment in 12th grade. The current study demonstrates that patterns of depression and conduct problems (e.g., growth vs. decreasing) are likely more important than the static levels at any particular point-in-time in relation to substance use risk.     

A review of Michael Peters and James Marshall, 1999, Wittgenstein: Philosophy,Postmodernism, Pedagogy,None of the Above,London: Bergin and Garvey

Studies in Philosophy and Education -     

Social networks in borderline personality disorder

The interpersonal dysfunction that characterizes borderline personality disorder (BPD) has generally been studied using broad global measures, leading to a lack of precision. We report on a novel methodology using social network analysis (SNA) to quantify interactions with others in the patient's social world. We assessed the social networks of 22 clinical patients, diagnosed with either BPD (N = 11) or no personality disorder (No PD; N = 11). The social networks of patients with BPD contained a greater number of former romantic partners, and a greater number of relationships that had been terminated. Mixed model analyses found that the No PD group reported higher levels of positive relationships (e.g., trust, social support) with more central members of their social networks, whereas the BPD group did not discriminate among members of their networks. Results suggest deficits in social cognition for positive relations, but not for negative relations such as interpersonal conflict.     

An exploratory study of consumer style: country differences and international segments

• An important consideration for marketers is determining the best approach to take when marketing their product or service across national borders. It has become clear that the answer to this is not as simple as complete standardization or adaptation, and the appropriate approach may be contingent on a complex set of variables. One key aspect of the puzzle relates to an understanding of the attitudes and behaviours of consumers. The current study examines consumer style (variables related to the way people engage in their consumption activities) as an important area of consideration related to international marketing efforts. Consumer style was investigated in three European countries and the US, using data from the DDB Brand Capital Study (a multi‐country survey). Although results showed that country differences are evident on consumption style, a cluster analysis suggests that there were four segments of consumers that transcend country boundaries. The findings add to our knowledge about consumers in these countries and the characteristics of the segments with respect to differing styles of consumption.

Copyright © 2007 John Wiley & Sons, Ltd.     

Hume’s better argument for motivational skepticism

On a standard interpretation, Hume argued that reason is not practical, because its operations are limited to “demonstration” and “probability.” But recent critics claim that by limiting reason’s operations to only these two, his argument begs the question. Despite this, a better argument for motivational skepticism can be found in Hume’s text, one that emphasizes reason’s inability to generate motive force against contrary desires or passions. Nothing can oppose an impulse but a contrary impulse, Hume believed, and reason cannot generate an impulse. This better argument is here developed and defended. Two lines of objection to it can be anticipated: (1) that reason actually can generate impulsive force, based on contents of its normative judgments and (2) that reason neither can nor needs to generate an impulse, since the actions of rational agents are not determined by forceful impulses of desire, as Hume supposed. These objections are answered by pointing out their unsatisfying consequences.     

Genetic Testing and Parkinson Disease: Assessment of Patient Knowledge,Attitudes, and Interest

The most common genetic contributor to late-onset Parkinson disease (PD) is the LRRK2 gene. In order to effectively integrate LRRK2 genetic testing into clinical practice, a strategy tailored to the PD population must be developed. We assessed 168 individuals with PD for baseline knowledge of genetics, perceived risk, and interest and opinions regarding genetic counseling and testing. Most participants felt that they were familiar with general genetics terms but overall knowledge levels were low, with an average score of 55%. The majority of participants thought it was likely they inherited a PD gene (72%), believed genetic testing for PD would be useful (86%), and were interested in genetic testing (59%) and genetic counseling (56%). However, only a few participants had heard of any genetic tests for PD (29%) or LRRK2 (10%). There appears to be a significant level of interest in genetics and genetic testing within the PD population, but a considerable deficit in genetics knowledge and an over-estimation of risk. Genetic education and counseling tools to address these needs were developed to provide patients with the ability to make informed and knowledgeable genetic testing decisions.     

Problem solving in infancy: the emergence of an action plan.

Young children's strategies were evaluated as they grasped and used objects. Spoons containing food and toys mounted on handles were presented to 9-, 14-, and 19-month-old children with the handle alternately oriented to the left and right. The alternating orientations revealed strategies that the children used for grasping items. Younger children usually reached with their preferred hand, disregarding the item's orientation. In the case of the spoon, this strategy produced awkward grasps that had to be corrected later. Older children anticipated the problem, alternated the hand used, and achieved an efficient radial grip (i.e., handle grasped with base of thumb toward food or toy end) for both orientations. A model of the development of action-selection strategies is proposed to illustrate planning in children younger than 2 years.