Predictors of Multiple Suicide Attempts among Suicidal Black Adolescents

Psychopathology, social support, and interpersonal orientation were studied in relation to suicide attempt status in acutely suicidal, psychiatrically hospitalized Black adolescents and a matched sample of White adolescents. In the total sample, multiple attempters were differentiated by lower perceived support. Within the Black youth subsample, social comparison and positive stimulation from others differentiated multiple attempters from single attempters/ideators. Only suicidal ideation predicted multiple attempts among White youth and only higher interpersonal orientation predicted multiple suicide attempts within Black adolescents.     

Suicidality in a Sample of Arctic Households

We investigated the association of suicidal ideation and behavior with depression, anxiety, and alcohol abuse in a Canadian Arctic Inuit community. Inuit (N = 111) from a random sample of households completed assessments of anxiety and depression, alcohol abuse, and suicidality. High rates of suicidal ideation within the past week (43.6%), and suicide attempts within last 6 months (30%), were reported. Ideation was more frequent among younger persons, whereas those favoring local native language were less likely to report a wish to die. Higher overall suicidality scores were associated with higher anxiety, and alcohol abuse, but not with depression or gender. Implications for future research are discussed.     

Hostile Intent Attributions and Relational Aggression: The Moderating Roles of Emotional Sensitivity,Gender, and Victimization

The current study adopts a relational vulnerability model to examine the association between hostile attribution bias and relational aggression. Specifically, the relational vulnerability model implicates the interactive effects of a number of relational risk factors in the development of relational aggression. A sample of 635 3rd, 4th, and 5th grade students (50.2% females) completed a self-report measure assessing hostile attribution bias and emotional distress for relational provocations. Peer nominations and teacher reports of relational aggression and relational victimization were also collected. Results supported the relational vulnerability model for girls only. Specifically, hostile attribution bias was associated with relational aggression only when relational victimization and emotional distress were also high. Implications for future research and clinical practice are discussed.     

Fractal dynamics of heart beat interval fluctuations in corticotropin-releasing factor receptor subtype 2 deficient mice

Non-linear fractal analysis of cardiac interbeat time series was performed in corticotropin-releasing factor receptor subtype 2 (CRFR2) deficient mice. Heart rate dynamics in mice constitutes a self-similar, scale-invariant, random fractal process with persistent intrinsic long-range correlations and inverse power-law properties. We hypothesized that the sustained tachycardic response elicited by intraperitoneal (ip) injection of human/rat CRF (h/rCRF) is mediated by CRFR2. In wildtype control animals, heart rate was increased to about maximum levels (~ 750 bpm) while in CRFR2-deficient animals baseline values were retained (~ 580 bpm). The tachycardic response elicited by ip-application is mediated by CRFR2 and is interpreted to result from sympathetic stimulation. However, the functional integrity of CRFR2 would not present a prerequisite to maintaining the responsiveness and resiliency of cardiac control to external environmental perturbations experimentally induced by extrinsic ip-application of h/rCRF or under physiological conditions that may be associated with an increased peripheral release of CRF. Under stressful physiological conditions achieved by novelty exposure, CRFR2 is not involved in the cardiodynamic regulation to external short-term stress. While the hypothesis of involvement of CRFR2 in cardiac regulation upon pharmacological stimulation cannot be rejected, the present findings suggest that the mechanism of action is by sympathetic stimulation, but would not unambiguously allow to draw any conclusions as to the physiological role of CRFR2 in the control of cardiac dynamics.     

Wednesday's Meeting Really Is on Friday: A Meta‐Analysis and Evaluation of Ambiguous Spatiotemporal Language

Experimental work has shown that spatial experiences influence spatiotemporal metaphor use. In these studies, participants are asked a question that yields different responses depending on the metaphor participants use. It has been claimed that English speakers are equally likely to respond with either variant in the absence of priming. Related studies testing non‐spatial experiences demonstrate varied results with a wide range of primes. Here, the effects of eye movement and stimuli presentation modality on comprehension of this question are investigated in different formats. In addition, the results of prior reported controls are re‐analyzed in a meta‐analysis to verify reliable ambiguity of the test question. Results suggest that English speakers have a baseline preference for the Moving Ego metaphor variant, with a stronger preference in verbal rather than written presentation. The findings have implications both for (re)interpretation of prior studies' results and future study designs.     

Can Couple Level Attachment Mediate the Influence of Depressive Symptoms on Health?

This study examined whether couple attachment behaviors, as measured by the BARE (Brief Accessibility, Responsiveness, and Engagement Scale), can mediate the influence of depressive symptoms on health for men and women. Data were gathered from the Relate Institute (www.relateinstitute.com) from 797 couples who were in a romantic relationship. Results showed depressive symptoms negatively predict daily eating habits and activity level and positively predicted total health problems and healthcare utilization for both females and males. For partners, female depression negatively predicated both male physical activity and total health problems, and also positively predicted healthcare utilization for men. Results also suggest that attachment behaviors mediated the association between depressive symptoms and total health problems. Findings are discussed from both a clinical and systemic perspective. It may be that fostering secure attachment behaviors in romantic relationships would be a helpful tool for providers working to address the depressive symptoms patients face.