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Although the background on positive and supportive leadership styles and their positive effects is constantly increasing, it is known that negative and destructive leadership styles are less researched. Thus, examining the toxic leadership behaviors of nurse managers and the effects of these on nurses has a critical significance. When the measurement tools evaluating toxic leadership are examined, it is seen that there is a need for measurement tools that evaluate the toxic leadership behaviors of nurse managers. This study's purpose is to psychometrically examine the Turkish version of the Toxic Leadership Behaviors of Nurse Managers (ToxBH-NM-TR) Scale and test the hypothesized conceptual model that includes the relationships between toxic leadership, mental well-being and work engagement.

This quantitative research was carried out in psychometric, correlational and cross-sectional design. A total of 559 nurses were included in the study by using the convenience sample method. The ToxBH-NM-TR Scale, Warwick–Edinburg Mental Well-Being Scale and Utrecht Work Engagement Scale (UWES) were used to measure the latent variables of the study. The data were collected between June and October 2020 with the online survey method. IBM SPSS Statistics 24 and Amos 21 statistical programs were used to analyze the data.

The scale-content validity index of the ToxBH-NM-TR was 0.88. Confirmatory factor analysis results showed that the fit indices were acceptable. The ToxBH-NM-TR had high internal consistency and temporal stability. In addition, the relationships between the latent variables of the study were in the expected direction and statistically significant (p < 0.001). The hypothesized conceptual model showed an acceptable or good fit to the data. Mental well-being partially mediated the relationship between toxic leadership and work engagement. The study showed that the ToxBH-NM-TR is a valid and reliable instrument and provided evidence that confirmed the hypothesized conceptual model.

The first of these is the fact that managers' toxic leadership behaviors were determined based on nurses' self-report. For this reason, participants' potential prejudices may have affected the results of the study. The second limitation concerns the data collection technique. Using face-to-face data collection techniques during the COVID-19 pandemic could create a danger/risk for the health of nurses, researchers and patients. Therefore, the nurses in this research were reached through an online survey on social media platforms. The participants of the study were limited to those who had access to social media. Finally, some socio-demographic and professional characteristics of the participants may be a confounding variable for the model. For this reason, this conceptual model needs to be validated on other samples in different countries to increase the generalizability of the research results.

The characteristics of this leadership style should be understood, and its effects on employees and organizations should be evaluated by screening regularly to prevent the development of toxic leaders and to eliminate the harmful effects of their behavior. The nurses should respond decisively to the forces that cause them to submit in order not to encourage a toxic leadership style. Healthcare institutions should develop procedures and take a proactive approach to destructive and negative leadership behaviors and practices. In addition, nurse managers should get feedback by using informal networks and 360-degree assessment tools and evaluate whether their leadership has a toxic function by regularly screening the effects of their leadership.

The results of this study offer important implications for nurses, managers and healthcare institutions and can be useful in gaining awareness about the negative effects of a toxic leadership style. In addition, the study provides a valid and reliable scale that will enable the identification of managers with this leadership style to prevent the development of toxic leaders and eliminate the harmful effects of their behavior.

This study aims to appraise and synthesize evidence examining the effects of toxic leadership on the nursing workforce and patient safety outcomes.

This is a systematic review in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses protocol. Five electronic databases (SCOPUS, PubMed, Web of Science, CINAHL and Psych INFO) were searched to identify relevant articles. Two independent researchers conducted the data extraction and appraisal. A content analysis was used to identify toxic leadership outcomes.

The initial literature search identified 376 articles, 16 of which were deemed relevant to the final review. Results of the content analysis identified 31 outcomes, which were clustered into five themes: satisfaction with work; relationship with organization; psychological state and well-being; productivity and performance; and patient safety outcomes. Seven mediators between toxic leadership and five outcomes were identified in the included studies.

Organizational strategies to improve outcomes in the nursing workforce should involve measures to build and develop positive leadership and prevent toxic behaviors among nurse managers through theory-driven strategies, human resource management efforts and relevant policy.

The review findings have provided modest evidence suggesting that working under a leader who exhibits toxic behaviors may have adverse consequences in the nursing workforce; however, more research examining if this leadership style influences patient safety and care outcomes is warranted.

Leadership has been known for its tremendous impact on employees' outcomes in any organisation. Constructive leadership positively impacts employees, while destructive leadership causes counterproductive work behaviours (CWB). This study aims to investigate the effect of toxic leadership on employees' CWB via the role of turnover intention by employing the psychological contract theory.

The participants were recruited using various recruitment methods such as online recruitment and alumni networks. After dropping some participants who failed to complete the three-wave data collection procedure, 457 responses were used for the final data analysis. The participants came from various public organisations in Indonesia (e.g. hospitals).

The results found that the effect of toxic leadership on employees' CWB was mediated by the role of turnover intention. Under a toxic leader, employees might intend to leave the organisations and commit CWB as the employees perceived the psychological contract breach.

Firstly, public organisations should implement some strategies to reduce the emergence of toxic behaviours. Secondly, public organisations should evaluate and examine how leadership is exercised within public organisations. Lastly, the organisations must ensure that their leaders do not breach employees' psychological contracts.

This study has highlighted the effect of toxic leadership on CWB in public service organisations by employing a psychological contract theory and a power distance perspective.

This study aims to analyze the relationship between toxic leadership and exit, prosocial voice, neglect and defensive silence. Second, this study investigates the mediating role of loyalty in these relationships.

A cross-sectional survey design with a sample of 544 individuals was used in this study.

The results suggested that toxic leadership positively influences exit, defensive silence and neglect and negatively influences prosocial voice. In addition, loyalty was found to be a partial mediator of the studied relationships.

This study addresses different theoretical debates, namely, loyalty as an attitude or behavior and its role in individuals’ responses and the relationship between silence and voice.

Neste estudo, pretendeu-se analisar a relação entre a liderança tóxica e a saída, voz prosocial, negligência e silêncio defensivo. Foi também investigado o papel mediador da lealdade nestas relações.

Foi realizado um estudo transversal com uma amostra de 544 participantes.

Os resultados sugerem que a liderança tóxica influência positivamente a saída, o silêncio defensivo e a negligência. Sugerem também uma influência negativa da liderança tóxica na voz prosocial. Adicionalmente, verificou-se que a lealdade é uma mediadora parcial nestas relações.

Este estudo aborda diferentes debates teóricos, nomeadamente a lealdade como atitude ou comportamento, o seu papel nas respostas dos indivíduos e a relação entre silêncio e voz.

En este estudio, nos proponemos analizar la relación entre el liderazgo tóxico y la salida, la voz prosocial, la negligencia y el silencio defensivo. En segundo lugar, investigamos el papel mediador de la lealtad en estas relaciones.

En este estudio se utilizó un diseño de encuesta transversal con una muestra de 544 individuos.

Los resultados sugirieron que el liderazgo tóxico influye positivamente en la salida, el silencio defensivo y la negligencia e influye negativamente en la voz prosocial. Además, la lealtad resultó ser un mediador parcial de las relaciones estudiadas.

Este estudio aborda diferentes debates teóricos, a saber, la lealtad como actitud o comportamiento y su papel en las respuestas de los individuos y la relación entre silencio y voz.

This study aims to investigate the impact of toxic leadership, organizational justice and organizational silence on hospital employees' intention to leave their jobs.

A questionnaire survey was conducted with permanent and contractual employees of a university teaching hospital, including nurses, medical assistants, health technicians and clerical staff. Structural equation modeling was used to develop and test the model.

The findings reveal that toxic leadership is directly and negatively related to organizational justice, while all dimensions of organizational silence and the intention to leave are positively related. In this model, the coefficients of the relationships are found to be higher, almost doubling in permanent employees than in contracted employees, except for the relationship between toxic leadership and silence to protect the organization. This exception lies in the fact that permanent workers with long-term employment have been dealing with the managers for many years.

The model can be extended with counterproductive behavior, work performance and satisfaction measures and work stress and compared with different sectors using higher sample volumes.

In the human-centered health-care industry, it is essential to know the way leadership behaviors guide health-care professionals. The negative leadership behaviors can negatively affect both employees' self-esteem and their attitudes toward patients and their relatives. The results of the present study are expected to contribute to the development of more effective manager selection and promotion policies by policy-makers as well as the determination of short- and long-term employment policies.

The purpose of this paper is to elucidate the distressing impact of toxic leadership on the mental state of the subordinates and examine the unique coping mechanisms used by them to deal with such leaders. The paper also examined the relationship between psychological distress and coping strategy used by subordinates to deal with the toxic leader.

This study presents a validity testing of two scales. The first scale was designed to measure experienced psychological distress emanating from exposure to toxic leaders, and the second scale aims to assess the coping strategies utilized by subordinates to deal with the toxic leaders. Data were collected from 570 employees working in public as well as private organizations in India.

The results of this paper supported the theorized two three-dimensional tools to measure: psychological distress (loss of self-worth, withdrawal and agitated) and coping strategies to deal with toxic leaders (assertive coping, avoidance coping and adaptive coping). Reliability estimates and construct validity of both the tools were established. The results also suggest that the loss of self-worth was negatively related with assertive coping, avoidance coping and adaptive coping. However, withdrawal was positively related with assertive coping and avoidance coping. Finally, agitation was positively related with avoidance and adaptive coping.

To the authors’ knowledge, this is one of the rare studies to examine together the phenomenon of both psychological distress experienced by subordinates and the coping strategies utilized by them to deal with toxic leaders.

The purpose of this paper is to establish a relationship between pay satisfaction and leader–member relationship and examine pay satisfaction as a moderator of the relationship between toxic leadership and LMX among public sector nurses in Ghana.

Using a cross-sectional survey approach, the authors used questionnaires to collect data from 225 nurses working in public hospitals in Ghana. The hypotheses were tested using covariance-based structural equation modelling.

The results of this study revealed that pay satisfaction levels of nurses had an influence on leader–member exchange (LMX). The results further showed that pay satisfaction as a moderator of the relationship between toxic leadership and LMX was not statistically significant.

Cross-sectional surveys are often criticised for causality issue. The causality issue here is that the link between toxic leadership, pay satisfaction and LMX was explored at a given point in time and ignores changes through time.

Hospitals must encourage their leaders to demonstrate more supportive and positive behaviours to foster positive leader–member relationships. Maladjusted, malcontent and malevolent leadership behaviours are dangerous for nurses and hospitals and can be addressed through leadership training and development.

Toxic leadership has considerable organisational costs of low productivity and negative work relationship at the workplace. The indirect effects of toxic leadership at the workplace on employees’ families and friends are often silent in organisations.

Nurses have been ignored in toxic leadership research in emerging economies. LMX is extended to examine toxic leadership and pay satisfaction in public hospitals in an emerging economy.

With issues like increasing student dropout rates, low productivity and compromised quality, research in higher education is faced with a number of paralyzing challenges in India. This study aims to locate the role of toxic academic supervision in relation to decreased quality of research.

Following a sequential mixed method design, the research begins with a quantitative analysis, which is then followed by an in-depth qualitative exploration.

The results of mediation analysis in this study reveal that students who experience toxic research supervision have a weak sense of identification and are also poor at self-disclosure, which results in increased distress and reduced engagement and productivity. Moreover, identification and self-disclosure have also been found to partially mediate the relationship between toxic supervision and distress. Furthermore, a thematic analysis of this study provides a detailed behavioral profile of toxic academic supervisors and highlights the consequences of such supervision with regard to students' well-being and productivity.

In terms of theoretical contributions, the study provides evidence that the concept of toxic leadership has applicability outside of the organizational context; in the educational sphere as well and that the toxic leadership scale can be successfully used to assess the severity of toxic supervision within the academic domain, and corrective actions can be taken to mitigate the effect of such supervisory style on students.

The study not only highlights the repercussions of toxicity in academia and higher education but also provides a detailed and in-depth description of the personality traits and behavioral idiosyncrasies of toxic supervisors, which can help in the early identification of toxic tendencies and can enable us to mitigate and prevent toxicity from the academic space and to ensure a conducive environment for students in higher education. Overall, the present research has important implications for researchers, academicians as well as policymakers.

The study is the first of its kind in terms of both, objective and methodology.

As the literature reveals an ongoing debate on the lack of agreement for a comprehensive conceptualization and definition of destructive leadership, the measurement of the construct is still problematic. Therefore, this chapter aims to review and summarize the current ways of measuring destructive leadership. A systematic review was conducted to examine the destructive leadership instruments. This chapter covers both qualitative and quantitative instruments in assessing destructive leadership and provides a brief overview of the scale development of the instruments. In addition to destructive leadership scales, commonly used harmful leadership scales such as abusive, tyrannical and toxic scales were also included for comparison purposes.

Failures in both followership and leadership become inevitable as mega construction projects are directed and controlled by toxic leaders. Consequently, team member's desire for knowledge hoarding silence is triggered and goal alignment between the leader and team members suddenly fades away to realize success in mega projects. Considering the growing importance of these rarely examined constructs and fragmented literature on toxic leadership (TL), team silence and mega project success (PS) in the global construction industry, the present study aimed to examine the effects of TL and project team member's silence (PTMS) on the success of mega construction projects. Moreover, the mediating influence of PTMS to link TL and mega construction PS has also been explored.

Drawing on survey data of 326 project professionals directly associated with mega construction projects worth US$62bn under the China–Pakistan Economic Corridor (CPEC), the conceptual model was tested with covariance-based structural equation modeling (CB-SEM) using Mplus program. Scales were adapted from previous research to measure TL (with its five-dimensions including abusive supervision, authoritarian leadership, self-promotion, narcissism and unpredictability), PS (with its three-dimensions including project management success, project ownership success and project investment success) and project team members' silence. Reflective–formative second order assessments were specifically applied to measure the multi-dimensional nature of TL and PS, respectively.

Mplus estimations revealed that TL negatively influences PS, besides forcing a culture of silence among project team members. Interestingly, the relationship between TL and PS is also negatively mediated by the PTMS.

The present study's findings are derived from data of project professionals (N = 326) to examine success in megaprojects under the CPEC. Hence, these findings may be re-validated through future studies on similar megaprojects (e.g. China's Belt and Road Initiative (BRI) worth US$8tn) that may also be predicated by TL tendencies, silent cultures and high-stakes involved to seize PS.

Policymakers, construction practitioners and other key stakeholders (e.g. departmental heads/supervisors) can take advantage of this new evidence to better interpret the success paradox in mega projects, and to reduce the spread and long-term damage of TL on team members and eventually create opportunities for PS.

The present study's novelty is manifested within this first empirical evidence on TL that breeds team silence in underperforming mega projects. Notably, present study offers alarming evidence on mega projects that can be easily derailed from success, as they continue to suffer from team silence and TL.