Explaining the Negative Effects of Stigma through Sense of Mastery

Previous research on stigma has identified many negative outcomes associated with its experience. These often include decreased affect and decreased life satisfaction. The present study examined sense of mastery - the sense of control one feels they have over the events in their life - as a moderator or mediator for these negative effects of stigma. To examine this, the Life Evaluations Survey was distributed to psychology students at a Southeastern university (N = 392). Participants completed measures of public stigma, self-stigma, sense of mastery, positive and negative affect, and life satisfaction. Results revealed experiences of public and self-stigma were associated with a decreased sense of mastery. In addition, sense of mastery was found to partially explain the relationship between stigma and quality of life. By contrast, results did not support a moderating role of mastery. Findings suggests that stigmatized individuals experience a sense of diminished control over their lives, which translates into decreased positive affect and life satisfaction

LONG TERM EFFECTS OF A WEARABLE NEUROMUSCULAR DEVICE ON MODIFIABLE RISK FACTORS ASSOCIATED WITH ACL INJURIES IN FEMALE COLLEGIATE ATHLETES DURING A COUNTERMOVEMENT JUMP

The purpose of this study was to determine if a wearable neuromuscular device (WND) was successful in reducing knee valgus angle (VA), and increasing electromyography (EMG) activity of the gluteus maximus (Gmax), gluteus medius (GMed), medial hamstrings (junction of the semimembranosis and semitendinosis), and vastus medialis oblique (VMO) in female collegiate soccer players during a countermovement jump (CMJ). 15 female soccer players, were recruited to partake in a 6 week study. Over the intervention period, the intervention group (n=8) wore a WND, during active rest. It was hypothesized that the WND group would display a decreased VA and increase in EMG activity of the 4 muscles, during a CMJ, when compared to the control group (n=7). No significant difference was found between the control and intervention groups between pre and post testing (

An Investigation into the Structure of Self-Control

Self-control has been measured using a variety of methods including self-report measures, cognitive inhibition tasks, delay discounting and delay of gratification tasks, and persistence and willpower tasks. Although these are all theoretically linked to processes involved in self-control, recent evidence has shown that these diverse measurement techniques relate only minimally to one another. Assuming that self-control is a reflective construct, this would indicate that many of these tasks are poor indicators of self-control. The present research challenges the common assumption that self-control is a reflective construct and instead proposes that self-control is a formative construct. Conceptualizing self-control as a formative construct could reconcile some of the inconsistencies in the literature, in particular the fact that many indicators for self-control do not correlate highly. To examine the possibility of a formative model of self-control, this research examines 13 commonly used measures of self-control and investigates indicator intercorrelations, indicator relationships with the theoretical consequences of self-control, and performs a vanishing tetrad test (Bollen & Ting, 2000). Results show that in general, indicator intercorrelations are low and nonsignificant as well as indictor correlations with theorized construct consequences. The results of the vanishing tetrad test suggest a reflective interpretation of self-control, but concerns with uniformly low covariances between indicators limit the interpretation of this test

Neuroticism and Ego Depletion Patterns

Self-control has been defined as the ability to override or alter an automatic response. Past research has suggested that those who are higher in the personality trait neuroticism display poorer self-control. Based on theory suggesting that self-control is a limited resource, the present study attempts to explain the relationship between neuroticism and self-control. Understanding that neuroticism is characterized by emotional instability, it follows that individuals high in neuroticism must exert more self-control in managing their negative moods, thus leaving them depleted for future acts of self-control. Participants (n = 84) completed measures of trait self-control, engaged in an emotional regulation task, and then completed measures of state self-control, affect, and rumination. Results revealed no significant effect of emotional regulation on state self-control, nor a significant effect of neuroticism on state self-control. The implications of these findings are discussed

A Rapid Method to Assess Grape Rust Mites on Leaves and Observations from Case Studies in Western Oregon Vineyards

The grape rust mite [Calepitrimerus vitis (Acari: Eriophyidae)] is an important pest of grapevines (Vitis sp.) in grape-growing regions around the world. A rapid method for extracting eriophyoid mites was adapted from earlier studies to provide integrated pest management (IPM) consultants and commercial growers with a practical, efficient, and reliable tool to monitor grape rust mites in vineyards and nursery stock vines. The rinse in bag (RIB) method allows quick extraction of mites from young shoots or from leaves using 35% to 70% ethanol or isopropanol in a sealable plastic bag. The RIB method recovered 85% of grape rust mites from single leaves in the first rinse. The method is useful to estimate grape rust mites on young shoots (≤10 cm length), although recovery of grape rust mites (average ranging from 35% to 81%) was lower because of a higher density of trichomes on young shoots as compared with leaf samples. The RIB method was not effective to assess grape rust mites within dormant buds, so a separate method using a blender to disrupt tissues and extract mites in alcohol was developed. The RIB method was used to determine grape rust mite abundance with leaf symptoms in commercial vineyards and nursery stock vines. The earliest visible symptom of grape rust mite damage on leaves in the summer was the development of stippling that is distinct from the type of damage caused by other grapevine pests. The stippling is described as numerous clear zones of small diameter (resembling pinholes) that are visible when a leaf is backlit. The severity of stippling was related to the number of grape rust mites present on leaves, with >600 occurring on leaves with severe stippling symptoms. In commercial vineyard case studies, the RIB method was used over two seasons and revealed that grape rust mite populations remained on leaves until postharvest, and foliar applications of wettable sulfur reduced grape rust mite populations on leaves.This is the publisher’s final pdf. The published article is copyrighted by the American Society for Horticultural Science and can be found at: http://horttech.ashspublications.org/Keywords: Scouting technique, Eriophyidae, Leaf stippling, Extraction method, Vitis vinifera, Calepitrimerus vitisKeywords: Scouting technique, Eriophyidae, Leaf stippling, Extraction method, Vitis vinifera, Calepitrimerus viti

2017 pest management guide for wine grapes in Oregon

Second revision March 24, 2017. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalogThis pest management guide is developed for use by vineyard managers in Oregon. It provides recommendations for chemicals, formulations, and usage rates of products that are intended to prevent, manage, and control vineyard diseases, insects, mites, weeds, and vertebrate pests. When considering a pesticide, evaluate its efficacy and its impact on beneficial arthropods, honey bees, and the environment. Not all registered pesticides are listed in this guide. These recommendations are based on research, label directions, and vineyard-use experience for Oregon

Population Density and Phenology of Tetranychus urticae (Acari: Tetranychidae) in Hop is Linked to the Timing of Sulfur Applications

The twospotted spider mite, Tetranychus urticae Koch, is a worldwide pest of numerous agronomic and horticultural plants. Sulfur fungicides are known to induce outbreaks of this pest on several crops, although mechanisms associated with sulfur-induced mite outbreaks are largely unknown. Studies were conducted during 2007–2009 in Oregon and Washington hop yards to evaluate the effect of timing of sulfur applications on T. urticae and key predators. In both regions, applications of sulfur made relatively late in the growing season (mid-June to mid-July) were associated with the greatest exacerbation of spider mite outbreaks, particularly in the upper canopy of the crop. The severity of mite outbreaks was closely associated with sulfur applications made during a relatively narrow time period coincident with the early exponential phase of spider mite increase and rapid host growth. A nonlinear model relating mean cumulative mite days during the time of sulfur sprays to the percent increase in total cumulative mite days (standardized to a nontreated plot) explained 58% of the variability observed in increased spider mite severity related to sulfur spray timing. Spatial patterns of spider mites in the Oregon plots indicated similar dispersal of motile stages of spider mites among leaves treated with sulfur versus nontreated leaves; however, in two of three years, eggs were less aggregated on leaves of sulfur-treated plants, pointing to enhanced dispersal. Apart from one experiment in Washington, relatively few predatory mites were observed during the course of these studies, and sulfur-induced mite outbreaks generally occurred irrespective of predatory mite abundance. Collectively, these studies indicate sulfur induces mite outbreaks through direct or indirect effects on T. urticae, mostly independent of predatory mite abundance or toxicity to these predators. Avoidance of exacerbation of spider mite outbreaks by sulfur sprays was achieved by carefully timing applications to periods of low spider mite abundance and slower host development, which is generally early to mid-spring for hop.Keywords: pest resurgence, Humulus lupulus, Podosphaera macularis, conservation biological controlKeywords: pest resurgence, Humulus lupulus, Podosphaera macularis, conservation biological contro

Distribution and activity of Drosophila suzukii in cultivated raspberry and surrounding vegetation

Spotted wing drosophila, Drosophila suzukii (Matsumura) (Diptera: Drosophilidae), may utilize wild ‘Himalaya’ blackberry (HB) Rubus armeniacus Focke or other non-crop plants as refugia and possibly exploit adjacent field margins before colonizing cultivated fruiting crops. Studies were conducted to determine the role of field margins containing HB and their effect on D. suzukii activity, density and distribution in an adjacent commercial red raspberry crop. One-ha plots adjacent to field margins containing HB or known non-host (NH) grass crops were established in 2011 and 2012 and replicated three times. Each plot contained two transects with monitoring traps for D. suzukii in the field margin (0 m) and spaced approximately 10 (crop boundary), 40, 70 and 100 m into the adjacent crop (n = 10 traps/plot). Field margin vegetation was treated with a 10% chicken egg white mark solution weekly from pre-harvest until the end of harvest using a cannon sprayer. Adult D. suzukii were collected from traps weekly and analysed for the presence of the egg white mark using an egg white-specific enzyme-linked immunosorbent assay (ELISA). During both years, marked flies and total flies were captured in higher numbers in HB field margins, whereas virtually no flies were captured in field margins containing no known alternative host. Similarly, more flies were captured in the crop near HB than near NH. Spatial Analysis by Distance IndicEs (SADIE) and mean D. suzukii trap captures additionally displayed significantly higher fly densities in the raspberry field near HB than near NH. These results suggest that HB may contribute to elevated D. suzukii populations and pest pressure in comparison with field margins containing no known alternate host vegetation for D. suzukii. Having closely adjacent non-crop alternate host landscapes may result in increased D. suzukii pest pressure

Prevención y manejo del virus del enrollamiento de la hoja y de los piojos harinosos en viñedos del estado de Oregon

Published January 2010. Reviewed January 2014. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalogKeywords: grapevine leafroll virus, mealybugs, grape vineyardsKeywords: grapevine leafroll virus, mealybugs, grape vineyard