18 research outputs found

    Social Contagion Of Mental Health: Evidence From College Roommates

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    From a policy standpoint, the spread of health conditions in social networks is important to quantify, because it implies externalities and possible market failures in the consumption of health interventions. Recent studies conclude that happiness and depression may be highly contagious across social ties. The results may be biased, however, because of selection and common shocks. We provide unbiased estimates by using exogenous variation from college roommate assignments. Our findings are consistent with no significant overall contagion of mental health and no more than small contagion effects for specific mental health measures, with no evidence for happiness contagion and modest evidence for anxiety and depression contagion. The weakness of the contagion effects cannot be explained by avoidance of roommates with poor mental health or by generally low social contact among roommates. We also find that similarity of baseline mental health predicts the closeness of roommate relationships, which highlights the potential for selection biases in studies of peer effects that do not have a clearly exogenous source of variation. Overall, our results suggest that mental health contagion is lower, or at least more context specific, than implied by the recent studies in the medical literature. Copyright © 2012 John Wiley & Sons, Ltd.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/99092/1/hec2873.pd

    Structural Extremes in a Cretaceous Dinosaur

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    Fossils of the Early Cretaceous dinosaur, Nigersaurus taqueti, document for the first time the cranial anatomy of a rebbachisaurid sauropod. Its extreme adaptations for herbivory at ground-level challenge current hypotheses regarding feeding function and feeding strategy among diplodocoids, the larger clade of sauropods that includes Nigersaurus. We used high resolution computed tomography, stereolithography, and standard molding and casting techniques to reassemble the extremely fragile skull. Computed tomography also allowed us to render the first endocast for a sauropod preserving portions of the olfactory bulbs, cerebrum and inner ear, the latter permitting us to establish habitual head posture. To elucidate evidence of tooth wear and tooth replacement rate, we used photographic-casting techniques and crown thin sections, respectively. To reconstruct its 9-meter postcranial skeleton, we combined and size-adjusted multiple partial skeletons. Finally, we used maximum parsimony algorithms on character data to obtain the best estimate of phylogenetic relationships among diplodocoid sauropods. Nigersaurus taqueti shows extreme adaptations for a dinosaurian herbivore including a skull of extremely light construction, tooth batteries located at the distal end of the jaws, tooth replacement as fast as one per month, an expanded muzzle that faces directly toward the ground, and hollow presacral vertebral centra with more air sac space than bone by volume. A cranial endocast provides the first reasonably complete view of a sauropod brain including its small olfactory bulbs and cerebrum. Skeletal and dental evidence suggests that Nigersaurus was a ground-level herbivore that gathered and sliced relatively soft vegetation, the culmination of a low-browsing feeding strategy first established among diplodocoids during the Jurassic

    Impulsivity and self-harm in adolescence: a systematic review

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    Research supports an association between impulsivity and self-harm, yet inconsistencies in methodology across studies have complicated understanding of this relationship. This systematic review examines the association between impulsivity and self-harm in community-based adolescents aged 11-25 years and aims to integrate findings according to differing concepts and methods. Electronic searches of EMBASE, MEDLINE, PsychINFO, CINAHL, PubMed and The Cochrane Library, and manual searches of reference lists of relevant reviews, identified 4,496 articles published up to July 2015, of which 28 met inclusion criteria. Twenty-four of the studies reported an association between broadly specified impulsivity and self-harm. However, findings varied according to the conception and measurement of impulsivity and the precision with which self-harm behaviours were specified. Specifically, lifetime non-suicidal self-injury was most consistently associated with mood-based impulsivity related traits. However, cognitive facets of impulsivity (relating to difficulties maintaining focus or acting without forethought) differentiated current self-harm from past self-harm. These facets also distinguished those with thoughts of self-harm (ideation) from those who acted on thoughts (enaction). The findings suggested that mood-based impulsivity is related to the initiation of self-harm, while cognitive facets of impulsivity are associated with the maintenance of self-harm. In addition, behavioural impulsivity is most relevant to self-harm under conditions of negative affect. Collectively, the findings indicate that distinct impulsivity facets confer unique risks across the life-course of self-harm. From a clinical perspective, the review suggests that interventions focusing on reducing rash reactivity to emotions or improving self-regulation and decision-making may offer most benefit in supporting those who self-harm

    Helping schools support caregivers of youth who self-injure: Considerations and recommendations

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    © 2018, The Author(s) 2018. Non-suicidal self-injury (NSSI) is a significant international mental health concern, with consequences for not only youth who self-injure, but for their entire family system. Helping caregivers respond productively to their child’s self-injury is a vital part of effectively addressing NSSI. This paper will assist school-based mental health practitioners and other personnel support caregivers of youth who self-injure by reviewing current literature, highlighting common challenges faced by school-based professionals, and providing evidenced-informed recommendations for supporting caregivers of youth who self-injure. We posit that schools can best support caregivers by having clear and well-articulated self-injury protocols and by engaging caregivers early. Once engaged, helping caregivers to navigate first conversations, keep doors open, know what to expect, seek support for themselves and understand and address safety concerns will ultimately benefit youth who self-injure and the school systems that support them. We also review recommendations for working with youth whose caretakers are unwilling or unable to be engaged

    Supplemental material for Helping schools support caregivers of youth who self-injure: Considerations and recommendations

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    <p>Supplemental material for Helping schools support caregivers of youth who self-injure: Considerations and recommendations by Janis L. Whitlock, Imke Baetens, Elizabeth Lloyd-Richardson, Penelope Hasking, Chloe Hamza, Stephen Lewis, Peter Franz and Kealagh Robinson in School Psychology International</p

    Position paper for guiding response to non-suicidal self-injury in schools

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    Around the world, school staff are increasingly expressing concern about nonsuicidal self-injury (NSSI) and how best to address this behavior in the school setting. However, there is a notable lack of informed guidance for schools, and clear inconsistencies in the practices school staff adopt. In this position paper we draw on our collective research and clinical expertise to provide best-practice guidelines for addressing NSSI in school settings. We outline the importance of a school protocol, and the key features all school protocols should contain. We also focus on how schools can minimize contagion of NSSI within their school environment. We believe these guidelines will be an important starting point for schools interested in developing an evidence-based approach to addressing NSSI

    Counternarratives of Curriculum in Schools, Neighborhoods, and Communities in the South

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    Presentation given at the Curriculum Studies Summer Collaborative Conference. In this interactive curriculum dialogue symposium, a group of multiethnic practitioner researchers explore diverse forms of curriculum inquiry (e.g., oral history, fiction, graphic novels, documentary novels, memoire, poetry, comics, etc.) to dive into the life of schools, neighborhoods, and communities in the U. S. South. We particularly focus on the power of counternarratives to contest metanarratives that often portray the South as backward, deficient, and inferior. We explore how critical theory, Black feminist thought, womanism, Black protest thought, Black liberation theology, critical race theory, critical race currere, multiracial or mixed race theory, and indigenous or decolonizing theories empower us to tell silenced and neglected stories of repressions, suppressions, and subjugations that challenge stereotypes of Southern women, Blacks, and other disenfranchised individuals and groups and to examine the forces of slavery, racism, sexism, classism, religious repression, and other forms of oppression and suppression on the life and curriculum in schools, neighborhoods, and communities in the South. The major purpose of this presentation is to share experience of developing diverse forms of curriculum inquiry and to recognize the importance of, and ways of engaging in such a wide array of forms to embody a particular stance in relation to integrity, beauty, humanity, and freedom, to move beyond traditions and boundaries, and to embed inquiry in school, neighborhood, and community life to transform research into positive social and educational change. This is a continuation of dialogue on curriculum in the South
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