Early intervention and prevention of anxiety disorders in children: Results at 2-year follow-up.

The Queensland Early Intervention and Prevention of Anxiety Project evaluated a child- and family-focused group intervention for preventing anxiety problems in children. This article reports on 12- and 24-mo follow-up data to previously reported outcomes at posttreatment and at 6-mo follow-up. A total of 1,786 7- to 14-year-olds were screened for anxiety problems using teacher nominations and children's self-report. After diagnostic interviews, 128 children were selected and assigned to either a 10-week school-based child- and parent-focused psychosocial intervention or a monitoring group. Both groups showed improvements immediately at postintervention and at 6-mo follow-up; the improvement was maintained in the intervention group only, reducing the rate of existing anxiety disorder and preventing the onset of new anxiety disorders. At 12 mo, the groups converged, but the superiority of the intervention group was evident again at 2-year follow-up. Severity of pretreatment diagnoses, gender, and parental anxiety predicted poor initial response to intervention, whereas pretreatment severity was the only predictor of chronicity at 24 mo. Overall, follow-up results show that a brief school-based intervention for children can produce durable reductions in anxiety problems. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

AdaptWID: An Adaptive, Memory-Efficient Window Aggregation Implementation

Memory efficiency is important for processing high-volume data streams. Previous stream-aggregation methods can exhibit excessive memory overhead in the presence of skewed data distributions. Further, data skew is a common feature of massive data streams. The authors introduce the AdaptWID algorithm, which uses adaptive processing to cope with time-varying data skew. AdaptWID models the memory usage of alternative aggregation algorithms and selects between them at runtime on a group-by-group basis. The authors' experimental study using the NiagaraST stream system verifies that the adaptive algorithm improves memory usage while maintaining execution cost and latency comparable to existing implementations.     

Safety aspects of probiotic bacterial strains Lactobacillus rhamnosus HN001 and Bifidobacterium animalis subsp. lactis HN019 in human infants aged 0–2 years

Given the relatively immature state of the neonatal gut and gut-associated immune system, the safety of probiotic strains for use as ingredients in infant milk formulae must be demonstrated in infant populations. As part of a double-blind placebo-controlled clinical trial of two commercially available probiotic strains in the reduction of risk for infant eczema, a number of safety outcomes were measured. Infants received daily doses of Lactobacillus rhamnosus HN001 (6 × 10⁹ cfu day^?1) or Bifidobacterium animalis subsp. lactis HN019 (9 × 10⁹ cfu day^?1), or placebo from birth to 24 months. Mothers received the same treatment from 35 weeks gestation, for up to 6 months postnatally while breastfeeding. No statistically significant differences were observed between the treatment groups for study withdrawal, incidence of adverse events, morphometric data, wheeze, and antibiotic use over the treatment period. We conclude that probiotics strains HN001 and HN019 were safe and well tolerated in infants, and did not affect normal growth.     

Factors influencing ratings of marital quality by individuals within dual-career marriages: A conceptual model.

In the present study, the authors proposed and tested a model of marital quality among individuals (52 men, 55 women) in dual-career marriages. The model was constructed within a social role framework and includes variables that positively influence marital quality, those that negatively influence marital quality, and those that mediate the relationship between the negative factors and marital quality. A path analysis indicated that marital quality was predicted directly by love, sexual satisfaction, communication, and satisfaction with the dual-career lifestyle. Objective demands of job and family roles predicted perceived job-family role strain. Coping, but not perceived equity, mediated the relationship between role strain and marital quality. Combined income and social support impacted marital quality indirectly through satisfaction with the dual-career lifestyle. Implications for counselors are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Hostile News: Partisan Use and Perceptions of Cable News Programming

Two trends have marked the development of U.S. cable television news in recent years: a blurring of hard and soft news and an increase in overt partisanship. This paper reports the results of 2 studies that provide insight into the nature and impact of these trends. The first study analyzes national survey data to identify the factors that lead political partisans to choose particular cable television news networks and programs. The second study employs experimental methods to demonstrate how viewers' partisan leanings influence their perceptions of content from CNN, Fox News, and The Daily Show. We found evidence of a relative hostile media phenomenon, in which partisans perceive more bias in programs that do not align with their own political perspective. Furthermore, the results indicate that partisanship informs viewers' perceptions of news content as interesting and informative.     

Modeling the forces of cutting with scissors

Modeling forces applied to scissors during cutting of biological materials is useful for surgical simulation. Previous approaches to haptic display of scissor cutting are based on recording and replaying measured data. This paper presents an analytical model based on the concepts of contact mechanics and fracture mechanics to calculate forces applied to scissors during cutting of a slab of material. The model considers the process of cutting as a sequence of deformation and fracture phases. During deformation phases, forces applied to the scissors are calculated from a torque-angle response model synthesized from measurement data multiplied by a ratio that depends on the position of the cutting crack edge and the curve of the blades. Using the principle of conservation of energy, the forces of fracture are related to the fracture toughness of the material and the geometry of the blades of the scissors. The forces applied to scissors generally include high-frequency fluctuations. We show that the analytical model accurately predicts the average applied force. The cutting model is computationally efficient, so it can be used for real-time computations such as haptic rendering. Experimental results from cutting samples of paper, plastic, cloth, and chicken skin confirm the model, and the model is rendered in a haptic virtual environment.     

Predictors and pathways from infancy to symptoms of anxiety and depression in early adolescence.

Data from a prospective 11-year longitudinal survey were used to identify early predictors and pathways to symptoms of anxiety and depression at 12–13 years of age, and to examine whether there were unique predictors of anxious versus depressive symptoms. Structural equation modeling was used to explore longitudinal relations between contextual (maternal distress, family adversities, and social support) and temperamental (shyness and emotionality) risk factors in their prediction of informant-consistent symptoms of anxiety and depression. The results show that early risk factors can explain 38% of the variance in boys’ covarying symptoms of anxiety and depression in early adolescence, and 25% of variance in girls’ covarying symptoms. Two main pathways were identified. One pathway was through temperament, as nearly all risk factors were partly mediated through child emotionality in midchildhood. Another pathway was through early contextual risk factors, with all direct and indirect contextual impact from before 5 years of age. Family adversity uniquely predicted depressive symptoms. These findings underscore the persisting impact of contextual predictors in families with children less than 5 years of age. The importance of early interventions to prevent adolescent internalizing problems is stressed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Meta-analysis of the relations of anxiety sensitivity to the depressive and anxiety disorders.

There is a substantial literature relating the personality trait anxiety sensitivity (AS; tendency to fear anxiety-related sensations) and its lower order dimensions to the mood and anxiety (i.e., internalizing) disorders. However, particularly given the disorders’ high comorbidity rates, it remains unclear whether AS is broadly related to these disorders or if it shows a pattern of differential relations. Meta-analyses of the concurrent relations of AS with the internalizing disorders were conducted based on 117 studies and 792 effect sizes. Mean Anxiety Sensitivity Index scores by diagnostic group and AS–symptom correlations both indicated that AS is most strongly related to panic, generalized anxiety disorder (GAD), and posttraumatic stress disorder (PTSD). More specific analyses were also conducted on (a) AS correlations with symptom dimensions within individual disorders and (b) correlations between lower order AS components and symptoms. The meta-analytic correlation matrix for higher order AS–disorder relations was submitted to path analysis, modeling latent Distress disorders and Fear disorders that control for much of the shared variance among the disorders. Results of the path analysis indicated that AS is broadly related to these disorders but that agoraphobia, GAD, panic, and PTSD have the strongest associations. In addition, AS was more strongly related to the latent distress disorders than the fear disorders. Because of the contemporaneous assessment of AS and internalizing disorders in these studies, the results should not be taken to mean that AS has a stronger casual association with certain disorders. Implications for concurrent AS–internalizing relations, interpretations of the AS construct, and structural models of personality and psychopathology are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)