The Effects of Rumination and Distraction Tasks on Psychophysiological Responses and Self-Reported Mood in Dysphoric and Nondysphoric Individuals

According to the response style theory of depression (Nolen-Hoeksema, 1987), the way in which individuals respond to depressed mood affects the severity and duration of that mood. Prior laboratory studies of response style have not included psychophysiological measures or investigated the relationship between ruminative response style and the conceptually-related constructs of worry and neuroticism. Dysphoric (n = 84) and nondysphoric participants (n = 86) were randomly assigned to either a rumination task (i.e., self-focused attention) or a distraction task (i.e., other-focused attention). In addition to the pre-task and post-task mood ratings used in prior response style studies, the present study included measures of worry, neuroticism and psychophysiological response. Greater psychophysiological response and self-reported depressed mood and worry were anticipated in the dysphoric ruminators as compared to the dysphoric distractors and the nondysphoric ruminators and distractors. Results supported prior findings that distraction and rumination differentially impact depressed mood in dysphoric individuals; dysphoric ruminators reported significantly higher levels of post-task depressed mood than did dysphoric distractors. Of the psychophysiological responses measured, a significant difference in post-rumination systolic blood pressure was found between nondysphoric men and women. Additionally, post-rumination worry ratings were significantly higher than the post-distraction worry ratings, regardless of initial dysphoria status. The implications of these results for future response style research are discussed

Toward a generative transformational approach to visual perception

Douglas Vicker

Feasibility Testing of the Alert for AFib Intervention.

Improving early detection and treatment of atrial fibrillation (AF) is critical because untreated AF is a major contributor to stroke and heart failure. We sought to generate knowledge about the feasibility of conducting a randomized controlled trial to test the effect of the Alert for AFib intervention on knowledge, attitudes, and beliefs about treatment-seeking for signs and symptoms of AF. Adults ≥65 years old (96% White) at risk for developing AF were randomized to receive the Alert for AFib intervention ( n = 40) or an attention control session ( n = 40). Feasibility goals for recruitment, participant retention, adherence, perceived satisfaction and burden, and intervention fidelity were met. From baseline to study completion, knowledge ( p = .005) and attitudes ( p < .001) about treatment-seeking improved more in the intervention group compared with the control group. Results support testing the effectiveness of the Alert for AFib intervention in a large trial

Human Performance on Visually Presented Traveling Salesperson Problems with Varying Numbers of Nodes

We investigated the properties of the distribution of human solution times for Traveling Salesperson Problems (TSPs) with increasing numbers of nodes. New experimental data are presented that measure solution times for carefully chosen representative problems with 10, 20, . . . 120 nodes. We compared the solution times predicted by the convex hull procedure proposed by MacGregor and Ormerod (1996), the hierarchical approach of Graham, Joshi, and Pizlo (2000), and by five algorithms drawn from the artificial intelligence and operations research literature. The most likely polynomial model for describing the relationship between mean solution time and the size of a TSP is linear or near-linear over the range of problem sizes tested, supporting the earlier finding of Graham et al. (2000). We argue the properties of the solution time distributions place strong constraints on the development of detailed models of human performance for TSPs, and provide some evaluation of previously proposed models in light of our findings

A Creative Writing Case Study of Gender-Based Violence in Coach Education: Stacey’s Story

Accepted author manuscript version reprinted, by permission, from Women in Sport and Physical Activity Journal, 2020, 28 (1): 72–80, https://doi.org/10.1123/wspaj.2018-0046]. © 2020 University of North Carolina at Greensboro (UNCG).Creative nonfiction writing is the literary technique employed in this article to explore insights and assist our understanding of an “alleged” sexual assault in a sport coach education environment. Creative nonfiction employs various narrative tools— characters, setting, figurative language, sequences of events, plot, sub-plot, and dialogue—designed to render the sensitive and controversial elements of sexual assault significant. Readers are, therefore, invited to engage with Stacey’s Story and reflect on the actions of both the perpetrator(s) and the victim. While there are risks associated with the sharing of stories, especially those which are considered dangerous, it is envisaged that Stacey’s Story will be viewed as an opportunity to develop more critical responses and advance our understanding of gender-based violence in sport.Peer reviewe

Mutagenicity testing for chemical risk assessment: update of the WHO/IPCS Harmonized Scheme

Since the publication of the International Programme on Chemical Safety (IPCS) Harmonized Scheme for Mutagenicity Testing, there have been a number of publications addressing test strategies for mutagenicity. Safety assessments of substances with regard to genotoxicity are generally based on a combination of tests to assess effects on three major end points of genetic damage associated with human disease: gene mutation, clastogenicity and aneuploidy. It is now clear from the results of international collaborative studies and the large databases that are currently available for the assays evaluated that no single assay can detect all genotoxic substances. The World Health Organization therefore decided to update the IPCS Harmonized Scheme for Mutagenicity Testing as part of the IPCS project on the Harmonization of Approaches to the Assessment of Risk from Exposure to Chemicals. The approach presented in this paper focuses on the identification of mutagens and genotoxic carcinogens. Selection of appropriate in vitro and in vivo tests as well as a strategy for germ cell testing are describe