Toxic Leadership, Destructive Leadership, and Identity Leadership: What are the Relationships and Does Follower Personality Matter?

Інтеграція теорій лідерства та розуміння взаємодії між цими теоріями є метою багатьох дослідників лідерства. Останніми роками темна сторона лідерства стала темою, яка цікавить як дослідників, так і практиків. Темне лідерство порівнюється з отрутою в організації, що впроваджує токсини в культуру компанії та прищеплює глибоко вкорінені поведінку, ставлення та дії, які є джерелом внутрішнього розпаду організації. Після перегляду короткого вступного відео в цій статті використовується перехресний дизайн, щоб дослідити оцінки послідовників токсичного лідерства, деструктивного лідерства та схильності лідерства до ідентичності. Відповідна теорія, що стосується лідерства ідентичності, токсичного лідерства, і деструктивні конструкції лідерства розглядаються та емпірично перевіряються, щоб з’ясувати, як ці теми взаємопов’язані. Більшість досліджень, що вивчають особистість послідовників і лідерські якості, зосереджені на позитивних стилях лідерства (наприклад, трансформація або трансакційний). Це дослідження усуває цю прогалину в літературі кількома способами. По-перше, ми досліджуємо, як лідерство ідентичності пов’язане з деструктивними та токсичними характеристиками лідерства. Ми перевіряємо, як сприйнятий зв'язок між цими змінними змінюється залежно від особистості послідовника, потреба, визначена в попередніх дослідженнях. Крім того, це дослідження сприяє обговоренню Пеллет’є (2012) відсутності досліджень, які б розглядали відносини лідер-послідовник у контексті темної сторони лідерства. Зокрема, щоб з’ясувати вплив оцінок підписників, роль особистості послідовника досліджується як модеруюча змінна. Ці результати підтверджують дослідження інших, які показують, що особистість впливає на інтерпретацію лідерських дій. Однак поточне дослідження розширює це поняття, щоб показати, що навіть короткий період контакту з лідером дозволяє послідовникам виносити судження про лідера.Integrating leadership theories and understanding the interactions between these theories is a goal for many leadership scholars. The dark side of leadership has become a topic of interest for researchers and practitioners alike in recent years. Dark leadership is likened to poison in an organization, embedding toxins in the company’s culture and instilling deep-rooted behaviors, attitudes, and actions that are a source of internal organizational decay. After viewing a brief introductory video, this article uses a cross-sectional design to investigate followers’ evaluations of a potential leader’s toxic leadership, destructive leadership, and identity leadership propensities. Relevant theory relating to identity leadership, toxic leadership, and destructive leadership constructs is reviewed and empirically tested to clarify how these topics interrelate. Most studies examining follower personality and leadership attributions have focused on positive leadership styles (e.g., transformation or transactional). This study addresses this gap in the literature in several ways. First, we examine how identity leadership is related to destructive and toxic leadership characteristics. We examine how the perceived relationship between these variables varies based on the follower’s personality, a need identified in previous studies. Further, this study contributes to Pelletier’s (2012) discussion of the lack of research that considers leader-follower relationships in the context of the dark side of leadership. Specifically, to clarify the influence of followers’ evaluations, the role of follower personality is explored as a moderating variable. These results support research from others showing that personality affects the interpretation of leadership actions. However, the current study extends this notion to show that even a short period of contact with the leader allows followers to make judgements about the leader

Axonal Preservation in Deep Subcortical White Matter Lesions in the Ageing Brain

Cerebral white matters lesions (WML) are seen in 94% of the population aged 64 and over and are associated with cognitive decline and depression. We used immunohistochemistry and stereological methods on post mortem brain samples derived from the Medical Research Council Cognitive Function and Ageing Study (MRC-CFAS) cohort to investigate the axonal density within deep subcortical lesions. There was no significant difference between the lesional and control white matter, therefore, we conclude that there is axonal preservation within these lesions that are characterized by demyelination

Search for Kosterlitz-Thouless transition in a triangular Ising antiferromagnet with further-neighbour ferromagnetic interactions

We investigate an antiferromagnetic triangular Ising model with anisotropic ferromagnetic interactions between next-nearest neighbours, originally proposed by Kitatani and Oguchi (J. Phys. Soc. Japan {\bf 57}, 1344 (1988)). The phase diagram as a function of temperature and the ratio between first- and second- neighbour interaction strengths is thoroughly examined. We search for a Kosterlitz-Thouless transition to a state with algebraic decay of correlations, calculating the correlation lengths on strips of width up to 15 sites by transfer-matrix methods. Phenomenological renormalization, conformal invariance arguments, the Roomany-Wyld approximation and a direct analysis of the scaled mass gaps are used. Our results provide limited evidence that a Kosterlitz-Thouless phase is present. Alternative scenarios are discussed.Comment: 10 pages, RevTeX 3; 11 Postscript figures (uuencoded); to appear in Phys. Rev. E (1995

Dietary choline and betaine intakes and risk of total and lethal prostate cancer in the Atherosclerosis Risk in Communities (ARIC) Study

Purpose: Two prior cohort studies suggested that choline, but not betaine intake, is associated with an increased risk of advanced prostate cancer (PCa). Given that evidence remains limited, we evaluated whether intakes of choline and derivative betaine are associated with total and lethal PCa risk and PCa death in men with PCa. Methods: We included 6,528 men (24.4% African American) without a cancer diagnosis at baseline (1987–1989) followed through 2012. Dietary intake was assessed using a food frequency questionnaire coupled with a nutrient database. We used Cox proportional hazards regression to estimate hazards ratios (HRs) and 95% confidence intervals (CIs) of total and lethal PCa risk overall and by race. Results: Choline intake was not associated with total (n = 811) or lethal (n = 95) PCa risk overall or by race. Betaine intake was inversely associated with lethal (tertile 3 vs 1, HR 0.59, 95% CI 0.35–1.00, p trend = 0.04), but not total PCa risk; patterns for lethal PCa were similar by race. Neither nutrient was associated with PCa death in men with PCa. Conclusions: Choline intake was not associated with total or lethal PCa or with PCa death in men with PCa. Betaine intake was inversely associated with lethal, but not total PCa risk or with PCa death in men with PCa. Our results do not support the hypothesis that higher choline intake increases lethal PCa risk, but do suggest that higher betaine intake may be associated with lower lethal PCa risk. Further investigation with a larger number of lethal cases is needed

Limiting Carleman weights and anisotropic inverse problems

In this article we consider the anisotropic Calderon problem and related inverse problems. The approach is based on limiting Carleman weights, introduced in Kenig-Sjoestrand-Uhlmann (Ann. of Math. 2007) in the Euclidean case. We characterize those Riemannian manifolds which admit limiting Carleman weights, and give a complex geometrical optics construction for a class of such manifolds. This is used to prove uniqueness results for anisotropic inverse problems, via the attenuated geodesic X-ray transform. Earlier results in dimension $n \geq 3$ were restricted to real-analytic metrics.Comment: 58 page

An error tolerant memory aid for reduced cognitive load in number copying tasks

Number copying tasks are still common despite increased digitalization of services. Number copying tasks are cognitively and visually demanding, errors are easily introduced and the process is often perceived as laborious. This study proposes an alternative scheme based on dictionary coding that reduces the cognitive load on the user by a factor of five. The strategy has several levels of error detection and error correction characteristics and is easy to implemen

Atmospheric effects on extensive air showers observed with the Surface Detector of the Pierre Auger Observatory

Atmospheric parameters, such as pressure (P), temperature (T) and density, affect the development of extensive air showers initiated by energetic cosmic rays. We have studied the impact of atmospheric variations on extensive air showers by means of the surface detector of the Pierre Auger Observatory. The rate of events shows a ~10% seasonal modulation and ~2% diurnal one. We find that the observed behaviour is explained by a model including the effects associated with the variations of pressure and density. The former affects the longitudinal development of air showers while the latter influences the Moliere radius and hence the lateral distribution of the shower particles. The model is validated with full simulations of extensive air showers using atmospheric profiles measured at the site of the Pierre Auger Observatory.Comment: 24 pages, 9 figures, accepted for publication in Astroparticle Physic

The exposure of the hybrid detector of the Pierre Auger Observatory

The Pierre Auger Observatory is a detector for ultra-high energy cosmic rays. It consists of a surface array to measure secondary particles at ground level and a fluorescence detector to measure the development of air showers in the atmosphere above the array. The "hybrid" detection mode combines the information from the two subsystems. We describe the determination of the hybrid exposure for events observed by the fluorescence telescopes in coincidence with at least one water-Cherenkov detector of the surface array. A detailed knowledge of the time dependence of the detection operations is crucial for an accurate evaluation of the exposure. We discuss the relevance of monitoring data collected during operations, such as the status of the fluorescence detector, background light and atmospheric conditions, that are used in both simulation and reconstruction.Comment: Paper accepted by Astroparticle Physic

The Fluorescence Detector of the Pierre Auger Observatory

The Pierre Auger Observatory is a hybrid detector for ultra-high energy cosmic rays. It combines a surface array to measure secondary particles at ground level together with a fluorescence detector to measure the development of air showers in the atmosphere above the array. The fluorescence detector comprises 24 large telescopes specialized for measuring the nitrogen fluorescence caused by charged particles of cosmic ray air showers. In this paper we describe the components of the fluorescence detector including its optical system, the design of the camera, the electronics, and the systems for relative and absolute calibration. We also discuss the operation and the monitoring of the detector. Finally, we evaluate the detector performance and precision of shower reconstructions.Comment: 53 pages. Submitted to Nuclear Instruments and Methods in Physics Research Section