Academic Pathways between Attention Problems and Depressive Symptoms Among Urban African American Children

The present study investigated the pathways between attention problems and depressive symptoms, particularly the role of academic incompetence, among a community sample of urban African American children. Results supported the hypothesized path models from inattention to depressive symptoms for girls and boys. Academic performance in the spring of first grade mediated the relationship between inattention in fall of first grade and depressive symptoms in spring of 3rd grade. The effects held when controlling for conduct problems and academic competence in first grade suggesting the path was specific to attention problems rather than a more general externalizing or school readiness pathway. Implications for designing interventions and prevention strategies for children with attention problems and depressive symptoms are discussed.     

Pharmacological dissociation of trace and long-delay fear conditioning in young rats

In most studies comparing trace and delay conditioning, CS duration is kept constant across training conditions but the interstimulus interval (ISI), the time from CS onset to US onset, is confounded. In the infrequently used long-delay condition, however, ISI is kept constant across the trace and delay conditions but CS duration varies. A recent study reported that trace and long-delay fear conditioning have the same developmental trajectory, with both emerging later in development than standard-delay conditioning (). Past studies have shown that trace conditioning is mediated by the cholinergic system; given the parallel developmental emergence of trace and long-delay conditioning, the present study examined whether the cholinergic system also mediates long-delay conditioning. Two experiments, both involving Sprague-Dawley-derived rats and using freezing as a measure of learned fear, showed that the cholinergic system is critically involved in trace conditioning but is not involved in long-delay conditioning. Specifically, pre-training injections of the muscarinic receptor antagonist scopolamine impaired acquisition of a CS-US association in 32-day-old rats trained with a trace procedure but had no effect on rats this age trained with a long-delay procedure (Experiment 1). Similarly, pre-training injections of physostigmine, a cholinesterase inhibitor, enhanced acquisition of trace conditioning in 25-day-old rats but had no effect on long-delay conditioning in rats this age (Experiment 2). Taken together, the results indicate that despite the similarities between trace and long-delay conditioning in terms of developmental emergence and level of conditioned responding, they are mediated by different physiological systems.     

Stranger in a strange land: an optimal-environments account of evolutionary mismatch

Synthese - In evolutionary medicine, researchers characterize some outcomes as evolutionary mismatch. Mismatch problems arise as the result of organisms living in environments to which they are...     

Transformational Leadership and Organisational Citizenship Behaviour: A Moderated Mediation Model of Leader‐Member‐Exchange and Subordinates' Gender

Transformational leadership (TL) enhances follower Organizational Citizenship Behavior (OCB) as mediated by leader‐member exchange (LMX). However, the strength of the positive associations among TL, LMX and OCB is subject to significant variability. Accordingly, we draw on several theories (self‐identity, role congruency, self‐concept, and social exchange) to propose that followers' gender moderates the relationships between all three of these variables. We argue differences in societal expectations and/or underlying motivation combine to make leadership of lesser importance to OCB among females than males. Using 202 supervisor‐subordinate dyads from Taiwan, a moderated mediation model of TL‐LMX‐OCB, with subordinate gender as a moderator, was tested. As hypothesised, each of the positive associations among TL, LMX and OCB were weaker for females than for males, thus accounting for some of the variability in the strength of the associations typically observed. Relatedly, although LMX fully mediated the TL‐OCB relationship in the entire sample, this effect was not observed among female subordinates. Further research is required to assess the degree to which these findings apply beyond the Confucian Asian societal cluster.     

Evaluation of an evolutionary model of self-preservation and self-destruction.

According to deCatanzaro's mathematical model of self-preservation and self-destruction, staying alive actually may reduce inclusive fitness for an individual who is low in reproductive potential and, at the same time, poses such a burden to close kin that it costs them opportunities for reproduction. Predictions generated from this model were tested using 175 university students as subjects and variables constructed from a 164-item questionnaire. The criterion variables were separate measures of depression, hopelessness, and suicide ideation and behavior. The predictor variables derived from the model were separate measures of reproductive potential of the individual, the individual's perceived benefit or cost to kin, and reproductive potential of the individual's kin. As predicted, there were negative and significant bivariate correlations between each of the model-generated predictor variables and one or more of the criterion variables. Multiple regression analyses showed that benefit to kin was the best predictor of both depression and hopelessness. Discriminant analysis showed that reproductive potential of kin significantly differentiated suicide attempters from nonattempters. Overall, our results support and extend deCatanzaro's model and empirical findings.     

Optimizing Contingency Management With Methamphetamine-Using Men Who Have Sex With Men

Among men who have sex with men (MSM), methamphetamine use is associated with multiple, overlapping syndemic conditions including increased risk for HIV seroconversion and onward HIV transmission. Contingency management (CM) is an evidence-based behavioral intervention implemented to curb methamphetamine use and optimize HIV/AIDS prevention among MSM in San Francisco since 2003. We conducted a program evaluation to document the evolution of this 12-week CM program to include delivery of brief, individual counseling incorporating motivational interviewing and behavioral skills. A drop-in group delivered concurrently with CM urine-screening visits also provides peer support as well as referrals for other social and medical services. From December 2011–October 2013, a total of 131 clients enrolled in the CM program and provided a median of 22 urine samples (Interquartile Range = 10–34) that were nonreactive for methamphetamine. Findings support the feasibility and acceptability of integrating individual and group counseling with community-based CM for methamphetamine-using MSM.     

Resisting,recognizing, and returning: A three‐component model and review of persistence in episodic goals

According to prior work, persistent goal pursuit is a continuous process where persisting is a matter of resisting the urge to give up. In everyday goals, however, persistence is often episodic, and its causes are more complex. People pause and resume pursuit many times. Whether people persist reflects more than will power and motivation, it also reflects the other goals they pursue, their resources, and the attentional demands of daily life. People can fail to persist not just because they gave up, but also because they failed to act. We propose a general model of persistence that accommodates the complexity of episodic goals. We argue that persistent goal pursuit is a function of three processes: resisting the urge to give up, recognizing opportunities for pursuit, and returning to pursuit. The broad factors that help and hurt persistence can be organized within these components. These components can also explain the mechanisms of four effective strategies for persistence: removing distractions, using reminders, using implementation intentions, and forming habits. The recognizing‐resisting‐returning model integrates and improves on extant theories of persistence and goal pursuit and is consistent with empirical work from laboratory and naturalistic settings.     

The Value of Lakota Traditional Healing for Youth Resiliency and Family Functioning

This article reports research findings on the impact of Oglala Lakota Sioux traditional healing on family functioning and youth resiliency where trauma, abuse, or violence are often present. Caregivers of Lakota youth struggling with serious emotional and behavioral problems participated in the study. The study included both quantitative and qualitative samples: 27 families for the quantitative sample and 8 families for the qualitative sample. Results from caregivers revealed that traditional healing and cultural practices, as well as the promotion of cultural identity, had statistically significant positive effects on the perceived familial and individual functioning of Lakota youth and their families. Effect sizes indicate that the results have strong practical significance.