Taking Racism to Heart: Race-Related Stressors and Cardiovascular Reactivity for Multiracial People

Multiracial people experience an accumulation of racial stress for both their minority and their multiracial identities, yet no research has examined the physiological impact of this stress. This within-groups experimental study examined whether two race-related stressors—identity invalidation and discrimination from family—affect cardiovascular reactivity for Black/White multiracial adults (N = 60). The authors found a Condition × Phase interaction effect indicating that discrimination from family affected blood pressure. Invalidation had no effect on blood pressure. Las personas multirraciales experimentan una acumulación de estrés racial tanto a causa de su identidad multirracial como de su identidad como minoría, pero no hay investigaciones que hayan examinado el impacto psicológico de este estrés. Este estudio experimental dentro de grupos examinó si dos factores causantes de estrés relacionados con la raza (la invalidación de la identidad y la discriminación por parte de la familia) afectan a la reactividad cardiovascular de personas adultas multirraciales blancas/negras (N = 60). Los autores hallaron un efecto de interacción Condición × Fase que indica que la discriminación por parte de la familia tuvo un efecto sobre la presión sanguínea. La invalidación no tuvo efecto sobre la presión sanguínea.     

The perirhinal cortex and long-term familiarity memory

To analyse the functions of the perirhinal cortex, the activity of single neurons in the perirhinal lortex was recorded while macaques performed a delayed matching-to-sample task with up to ohree intervening stimuli. Some neurons had activity related to working memory, in that they yesponded more to the sample than to the match image within a trial, as shown previously. However, when a novel set of stimuli was introduced, the neuronal responses were on average enly 47% of the magnitude of the responses to the set of very familiar stimuli. Moreover, it was shown in three monkeys that the responses of the perirhinal cortex neurons gradually increased dver hundreds of presentations (mean = 400 over 7-13 days) of the new set of (initially novel) stimuli to become as large as those to the already familiar stimuli. Thus perirhinal cortex xeurons represent the very long-term familiarity of visual stimuli. Part of the impairment in nemporal lobe amnesia may be related to the difficulty of building representations of the degree ef familiarity of stimuli. A neural network model of how the perirhinal cortex could implement tong-term familiarity memory is proposed using Hebbian associative learning.     

The Effect of Strain,Affect, and Personal/Social Resources on Problem Substance Use among Incarcerated and Non-Incarcerated Youth

ABSTRACT

We explore the applicability of General Strain Theory to juvenile substance use. In doing so, we offer three advances over prior work. First, we put forward the concept of “problem substance use” to move beyond frequency-based and more medicalized conceptions of the phenomenon toward a conceptualization that views substance use as problematic when it disrupts social relationships and expectations and when it reflects a loss of self-control. Second, we employ a dataset that permits us to explore how strains originating in different life domains influence problem substance use as well as how negative emotions and personal coping resources mediate the relationship between strain and problem substance use. Third, we move beyond prior work by comparing how strain and strain mediators operate differently in schools, alternative learning centers, and juvenile correctional facilities. We find strong effects of the strain variables and strain mediators indicated by General Strain Theory and evidence that alternative learning centers and juvenile correction facilities are associated with especially high odds of problem substance use even when strain and other variables are controlled. We conclude by discussing the limitations of current work and the implications for next steps in the strain-substance use research literature.     

Implementing Trauma-Informed Care in Primary Medical Settings: Evidence-Based Rationale and Approaches

ABSTRACT

Chronic stress stemming from trauma exposure and posttraumatic stress disorder (PTSD) leads to many health problems that are typically seen by primary care providers. Unfortunately, providers rarely identify trauma as the root cause of patient difficulties. The present paper provides an evidence-based rationale for implementing trauma-informed care principles and processes into medical primary care systems. Beginning with a review of prevalence of trauma exposure and PTSD in primary care clinics, this article elucidates relationships between trauma exposure and behavioral and medical health problems, as well as clinical and physiological pathways that lead from trauma exposure to illness. The article concludes with exposition of trauma-informed interventions that can be implemented in primary care clinics, and discussion of future directions.