The epistemic normativity of conjecture

Philosophical Studies - This paper has two aims: (1) it develops and defends a fully-fledged account of the epistemic normativity of conjecture (2) it goes sharply against orthodoxy, in arguing...     

"Holler, run, be loud:" strategies for promoting child physical activity in a low-income, African American neighborhood

This article identifies and describes child management practices among a sample of African American caregivers in a low-income, inner-city neighborhood. Caregivers responded to low levels of neighborhood collective socialization, collective efficacy, social control, and institutional resources by using strategies that protected children and promoted physical activity. Using diverse qualitative methods (interviews, observations) and demographic data on neighborhood disadvantage and family and household characteristics, the research revealed seven caregiver management strategies that promoted child physical activity, despite multiple neighborhood barriers. These included ecological appraisal, boundary enforcement, chaperonage, kin-based play groups, collective supervision, local resource brokering, and extralocal resource brokering. These findings provide important substantive and theoretical insights on the relationship between caregiver practices, neighborhood social context, and child physical activity.     

Adaptive patterns of stress responsivity: a preliminary investigation

The adaptive calibration model (ACM) is an evolutionary-developmental theory of individual differences in stress responsivity. In this article, we tested some key predictions of the ACM in a middle childhood sample (N = 256). Measures of autonomic nervous system activity across the sympathetic and parasympathetic branches validated the 4-pattern taxonomy of the ACM via finite mixture modeling. Moreover, the 4 patterns of responsivity showed the predicted associations with family stress levels but no association with measures of ecological stress. Our hypotheses concerning sex differences in responsivity were only partly confirmed. This preliminary study provides initial support for the key predictions of the ACM and highlights some of the methodological challenges that will need to be considered in future research on this topic.     

Differentiating Adolescent Self-Injury from Adolescent Depression: Possible Implications for Borderline Personality Development

Self-inflicted injury (SII) in adolescence marks heightened risk for suicide attempts, completed suicide, and adult psychopathology. Although several studies have revealed elevated rates of depression among adolescents who self injure, no one has compared adolescent self injury with adolescent depression on biological, self-, and informant-report markers of vulnerability and risk. Such a comparison may have important implications for treatment, prevention, and developmental models of self injury and borderline personality disorder. We used a multi-method, multi-informant approach to examine how adolescent SII differs from adolescent depression. Self-injuring, depressed, and typical adolescent females (n = 25 per group) and their mothers completed measures of psychopathology and emotion regulation, among others. In addition, we assessed electrodermal responding (EDR), a peripheral biomarker of trait impulsivity. Participants in the SII group (a) scored higher than depressed adolescents on measures of both externalizing psychopathology and emotion dysregulation, and (b) exhibited attenuated EDR, similar to patterns observed among impulsive, externalizing males. Self-injuring adolescents also scored higher on measures of borderline pathology. These findings reveal a coherent pattern of differences between self-injuring and depressed adolescent girls, consistent with theories that SII differs from depression in etiology and developmental course.     

Cognition and lobar morphology in full mutation boys with fragile X syndrome

The aims of the present study are twofold: (1) to examine cortical morphology (CM) associated with alterations in cognition in fragile X syndrome (FXS); (2) to characterize the CM profile of FXS versus FXS with an autism diagnosis (FXS + Aut) as a preliminary attempt to further elucidate the behavioral distinctions between the two sub-groups. We used anatomical magnetic resonance imaging surface-based morphometry in 21 male children (FXS N = 11 and age [2.27-13.3] matched controls [C] N = 10). We found (1) increased whole hemispheric and lobar cortical volume, cortical thickness and cortical complexity bilaterally, yet insignificant changes in hemispheric surface area and gyrification index in FXS compared to C; (2) linear regression analyses revealed significant negative correlations between CM and cognition; (3) significant CM differences between FXS and FXS + Aut associated with their distinctive behavioral phenotypes. These findings are critical in understanding the neuropathophysiology of one of the most common intellectual deficiency syndromes associated with altered cognition as they provide human in vivo information about genetic control of CM and cognition.     

Long-term school-level effects of the Olweus Bullying Prevention Program (OBPP)

In agreement with two predictions, this somewhat unusual study documented that 70 elementary schools (A-schools) with continued and repeated use of the Olweus Bullying Questionnaire (OBQ) in a four-year follow-up period of 2007–2010, two to eight years after original implementation of the Olweus Bullying Prevention Program (OBPP), had a clearly more favorable long-term development in terms of being-bullied problems, as measured with a completely independent data source, the National Pupil Survey than 102 comparable schools (B-schools) that had not conducted any OBQ-surveys in the same period. The odds of being bullied for students in a Norwegian average elementary school were also almost 40% higher than for students who attended a school with continued use of the OBQ, and very likely, other components of the program. Several alternative explanations of the findings were explored and found wanting. Results suggested that A-schools with continued use had changed their “school culture” for the better with regard to awareness, preparedness and competence in handling and preventing bullying. This form of ‘organizational learning’ has major consequences in that new groups of students will benefit from such a school environment. It was generally concluded – in spite of a highly stable average of the level of bullying problems in Norway – that it is fully possible to substantially reduce such problems not only in one-year evaluations, as has been amply documented before, but also in the long term, up to eight years after original implementation, with a program such as the Olweus Bullying Prevention Program.     

Occupational Therapy Interventions in Mental Health: A Literature Review in Search of Evidence

A growing body of literature sheds light on occupational therapy (OT) interventions and outcomes in adult mental health. Although this research has not developed to the point where a systematic review is warranted, a synthesis of these findings is needed. This article provides an overview of OT interventions in adult mental health and their documented outcomes. Fifty peer-reviewed intervention studies targeting adults with mental illness were reviewed. Seven categories of interventions emerged: employment/education; psychoeducation; creative occupations/activity; time use/occupational balance; skills/habit development; group/family approaches; and animal-assisted therapy. Further research involving rigorous designs is needed to establish a solid evidence base for OT interventions in adult mental health.     

Children's use of verbal collaterals in DRL performance

This study examines the effects of a verbal collateral (counting) on a series of three differential reinforcement of low rates of response (DRL) tasks with progressively longer interresponse time requirements (DRL-2, DRL-6 and DRL-12). Forty-eight 10-year-old children, divided according to sex and conceptual tempo (fast-inaccurate vs. slow-accurate) participated in DRL training, half of them being instructed to count aloud between responses. Counting was found to be related to faster learning of all the tasks and to greater efficiency in obtaining reinforcement in most cases. It also eliminated differences due to sex and conceptual tempo except in DRL-12. However, it had the disadvantage of causing inexact temporal discrimination. The results were replicated in a group of 8-year-old subjects performing the same tasks.