Editorial: Fifty Shades of Grey: Exploring the Dark Sides of Leadership and Followership

“I could stand in the middle of Fifth Avenue and shoot somebody and I wouldn’t lose any voters. Okay. It’s like incredible!” Donald J. Trump, President of the United States, in January 2016 at a campaign rally in Iowa. In light of corporate and political turmoil and subsequent questions raised about leaders’ dark sides, this Research Topic is particularly timely. We set out to contribute to theoretical, empirical and methodological advancements, focusing on dark sides of personality, processes, and perceptions, and how they relate to leader-follower relationships. Studies of the dark side of leadership follow a long-standing tradition (Conger, 1990), and initially focused mainly on negative leader traits such as narcissism (Braun, 2017) and leader behaviors such as abusive supervision (Schyns & Schilling, 2013; Tepper, 2007; Tepper, Simon, & Park, 2017; Hogan & Kaiser, 2005). The particular potential for toxicity to unfold at the intersections of leadership and followership has been noted (Padilla, Hogan, & Kaiser, 2007), yet research into this domain remains largely underdeveloped. While followership theories receive increasing attention (Uhl-Bien, Riggio, Lowe, & Carsten, 2014), the potential dark sides of followership or followers’ impact on dark-side leaders remain unclear. Deviating from the unidimensional view that leaders are omnipotent and to be blamed for negative outcomes, we seek to place emphasis on the different ‘shades’ of dark leadership by focusing on how dark leadership can be explained by taking leaders, followers, and their interaction in specific contexts into account. In line with the purpose to explore the intersections between dark-side leadership and followership, we saw three main themes emerging from the articles published in this Research Topic. The first theme revolves around leader traits and behaviors. It focuses on questions such as what makes a ‘dark-side’ leader and what ‘dark-side’ leaders do. The second theme accounts for the interaction between leaders’ and followers’ characteristics, and zooms in on the extent to which this interaction may affect the negative impact of ‘dark-side’ leadership or followership. Finally, the articles also reflect novel ideas, extensions and integration of current theories at the interface between leadership and followership

Leadership and followership identity processes: A multilevel review

A growing body of leadership literature focuses on leader and follower identity dynamics, levels, processes of development and outcomes. Despite the importance of the phenomena, there has been surprisingly little effort to systematically review the widely dispersed literature on leader and follower identity. In this review we map existing studies on a multilevel framework that integrates levels-of-the self (individual, relational and collective) with the levels-of-analysis (intrapersonal, interpersonal and group) on which leader or follower identity work takes place. We also synthesize work from multiple research paradigms, such as social psychology experimental studies, narrative accounts of leaders' identity work and field studies on antecedents, outcomes, mediating mechanisms and boundary conditions. Finally, we outline implications for leadership development and call attention to key themes we see ripe for future research

Determinants of short-period heart rate variability in the general population

Decreased heart rate variability (HRV) is associated with a worse prognosis in a variety of diseases and disorders. We evaluated the determinants of short-period HRV in a random sample of 149 middle-aged men and 137 women from the general population. Spectral analysis was used to compute low-frequency (LF), high-frequency (HF) and total-frequency power. HRV showed a strong inverse association with age and heart rate in both sexes with a more pronounced effect of heart rate on HRV in women. Age and heart rate-adjusted LF was significantly higher in men and HF higher in women. Significant negative correlations of BMI, triglycerides, insulin and positive correlations of HDL cholesterol with LF and total power occurred only in men. In multivariate analyses, heart rate and age persisted as prominent independent predictors of HRV. In addition, BMI was strongly negatively associated with LF in men but not in women, We conclude that the more pronounced vagal influence in cardiac regulation in middle-aged women and the gender-different influence of heart rate and metabolic factors on HRV may help to explain the lower susceptibility of women for cardiac arrhythmias. Copyright (C) 2001 S. Karger AG, Basel

AltitudeOmics: The Integrative Physiology of Human Acclimatization to Hypobaric Hypoxia and Its Retention upon Reascent.

An understanding of human responses to hypoxia is important for the health of millions of people worldwide who visit, live, or work in the hypoxic environment encountered at high altitudes. In spite of dozens of studies over the last 100 years, the basic mechanisms controlling acclimatization to hypoxia remain largely unknown. The AltitudeOmics project aimed to bridge this gap. Our goals were 1) to describe a phenotype for successful acclimatization and assess its retention and 2) use these findings as a foundation for companion mechanistic studies. Our approach was to characterize acclimatization by measuring changes in arterial oxygenation and hemoglobin concentration [Hb], acute mountain sickness (AMS), cognitive function, and exercise performance in 21 subjects as they acclimatized to 5260 m over 16 days. We then focused on the retention of acclimatization by having subjects reascend to 5260 m after either 7 (n = 14) or 21 (n = 7) days at 1525 m. At 16 days at 5260 m we observed: 1) increases in arterial oxygenation and [Hb] (compared to acute hypoxia: PaO2 rose 9±4 mmHg to 45±4 while PaCO2 dropped a further 6±3 mmHg to 21±3, and [Hb] rose 1.8±0.7 g/dL to 16±2 g/dL; 2) no AMS; 3) improved cognitive function; and 4) improved exercise performance by 8±8% (all changes p<0.01). Upon reascent, we observed retention of arterial oxygenation but not [Hb], protection from AMS, retention of exercise performance, less retention of cognitive function; and noted that some of these effects lasted for 21 days. Taken together, these findings reveal new information about retention of acclimatization, and can be used as a physiological foundation to explore the molecular mechanisms of acclimatization and its retention

Lifestyle physical activity among urban Palestinians and Israelis: a cross-sectional comparison in the Palestinian-Israeli Jerusalem risk factor study

<p>Abstract</p> <p>Background</p> <p>Urban Palestinians have a high incidence of coronary heart disease, and alarming prevalences of obesity (particularly among women) and diabetes. An active lifestyle can help prevent these conditions. Little is known about the physical activity (PA) behavior of Palestinians. This study aimed to determine the prevalence of insufficient PA and its socio-demographic correlates among urban Palestinians in comparison with Israelis.</p> <p>Methods</p> <p>An age-sex stratified random sample of Palestinians and Israelis aged 25-74 years living in east and west Jerusalem was drawn from the Israel National Population Registry: 970 Palestinians and 712 Israelis participated. PA in a typical week was assessed by the Multi-Ethnic Study of Atherosclerosis (MESA) questionnaire. Energy expenditure (EE), calculated in metabolic equivalents (METs), was compared between groups for moderate to vigorous-intensity physical activity (MVPA), using the Wilcoxon rank-sum test, and for domain-specific prevalence rates of meeting public health guidelines and all-domain insufficient PA. Correlates of insufficient PA were assessed by multivariable logistic modeling.</p> <p>Results</p> <p>Palestinian men had the highest median of MVPA (4740 METs-min_*wk^-1) compared to Israeli men (2,205 METs-min_*wk^-1<it>p </it>< 0.0001), or to Palestinian and Israeli women, who had similar medians (2776 METs-min_*wk^-1). Two thirds (65%) of the total MVPA reported by Palestinian women were derived from domestic chores compared to 36% in Israeli women and 25% among Palestinian and Israeli men. A high proportion (63%) of Palestinian men met the PA recommendations by occupation/domestic activity, compared to 39% of Palestinian women and 37% of the Israelis. No leisure time PA was reported by 42% and 39% of Palestinian and Israeli men (<it>p </it>= 0.337) and 53% and 28% of Palestinian and Israeli women (<it>p </it>< 0.0001). Palestinian women reported the lowest level of walking. Considering all domains, 26% of Palestinian women were classified as insufficiently active versus 13% of Palestinian men (<it>p </it>< 0.0001) who did not differ from the Israeli sample (14%). Middle-aged and elderly and less educated Palestinian women, and unemployed and pensioned Palestinian men were at particularly high risk of inactivity. Socio-economic indicators only partially explained the ethnic disparity.</p> <p>Conclusions</p> <p>Substantial proportions of Palestinian women, and subgroups of Palestinian men, are insufficiently active. Culturally appropriate intervention strategies are warranted, particularly for this vulnerable population.</p

The relationship between transformational leadership and follower sickness absence:The role of presenteeism

The impact of transformational leaders on employee health and well-being has received much attention. Less research has focused on the relationships between transformational leaders and followers’ sickness absenteeism. In the present study, we examined the relationships between presenteeism, group-level transformational leadership, and sickness absence rates in a three-year longitudinal study in a postal service (N = 155). We found group-level transformational leadership in year 1 predicted sickness absenteeism in year 2, but not year 3. In examining conditions under which transformational leadership may be linked to higher levels of sickness absenteeism, we found that presenteeism in year 1 moderated the link between transformational leadership in year 1 and sickness absenteeism in year 3, such that followers working in groups with a transformational leader and who were high in presenteeism reported higher levels of sickness absenteeism. Our results suggest a complex picture of the relationship between transformational leadership and sickness absenteeism, transformational leaders may promote self-sacrifice of vulnerable followers by encouraging them to ignore their illnesses leading to increased risks of sickness absence in the long-term

Using choir conducting to improve leadership practice

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