“Jekyll and Hyde” Leaders Do Lasting Damage, New Research Shows

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"Jekyll and Hyde" Leaders Do Lasting Damage, New Research Shows

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Hoboken, N.J., November 4, 2024 - There's only one thing worse than an abusive boss-and that's a boss who thinks they can make up for their bad behavior by turning on the charm the following day. That's the key finding from a new study from researchers at Stevens Institute of Technology, which shows that employees' morale and job performance decline sharply when leaders lurch unpredictably between good and bad behavior.

"We already know that abusive leadership takes a serious toll on workers-but now we're seeing that leaders who swing back and forth between abusive and ethical leadership do even more damage to employees," says Dr. Haoying Xu, the study's lead author and an assistant professor of management in the Stevens School of Business. "It turns out that reverting to an ethical leadership style doesn't magically erase the impact of prior bad behavior-and in some circumstances, it can actually make things worse."

The research, published in the Journal of Applied Psychology, used surveys and field experiments to examine the impact of "Jekyll-and-Hyde" leadership on more than 650 full-time employees based in the United States and Europe. Dr. Xu's team confirmed that the workers struggled when their supervisors were abusive-but found an even stronger negative impact when supervisors alternated unpredictably between abusive and ethical leadership styles.

"If you're constantly guessing which boss will turn up-the good cop or the bad cop-then you wind up emotionally exhausted, demoralized, and unable to work to your full potential," Dr. Xu explains.

The new research also shows for the first time that "Jekyll-and-Hyde" leadership can take a serious toll even when employees aren't directly impacted by a leader's on-again, off-again misbehavior. When a supervisor's own boss alternated between abusive and ethical leadership, the study found, it created additional uncertainty and eroded employees' confidence in the supervisor's capabilities.

"In today's workplaces, employees are very attuned to their supervisors' relationships with more senior leaders," Dr. Xu says. "If that relationship becomes unpredictable, or is marked by repeated bouts of good and bad behavior, it can cause real problems for the whole team."

For organizations, the research offers some important new insights-most notably the fact that leaders who seek to atone for intermittent bad behavior are often doing real harm to their employees. "Organizations tend to intervene when bosses are consistently abusive, but are more tolerant of leaders whose abusive behavior only shows through from time to time," Dr. Xu says. "With this study, however, we've shown that intermittent bad behavior can actually be more toxic for organizations."

To counter Jekyll-and-Hyde leadership, Dr. Xu says, organizations should pay attention to employees who voice concerns, and hold leaders accountable for sporadic abusive behavior. It's also worth considering anger management coaching for leaders who show signs of volatility. "This kind of intermittent abusive leadership tends to be impulsive," Dr. Xu says. "That means there's scope to reduce or eliminate it by helping leaders to manage their tempers and improve their impulse control."

In future research, Dr. Xu hopes to explore how employees respond to and learn from Jekyll-and-Hyde leadership, and how a leader's periodic abusive behavior impacts individual behavior and team dynamics. "There are some indications that this kind of leadership could be contagious, with a leader's volatility fostering volatility in others," he says.

There is also some intriguing early evidence that employees might learn from and emulate a leader's bad behavior more than they replicate their good behavior. "If that's the case, then it would be another big reason for organizations to take Jekyll-and-Hyde leadership seriously," Dr. Xu warns.

About Stevens Institute of Technology
Stevens Institute of Technology is a premier, private research university situated in Hoboken, New Jersey. Since our founding in 1870, technological innovation has been the hallmark of Stevens' education and research. Within the university's three schools, nearly 9,000 undergraduate and graduate students collaborate closely with faculty in an interdisciplinary, student-centric, entrepreneurial environment. Academic and research programs spanning business, computing, engineering, the arts and other disciplines actively advance the frontiers of science and leverage technology to confront our most pressing global challenges. The university continues to be consistently ranked among the nation's leaders in career services, post-graduation salaries of alumni and return on tuition investment.

Stevens Media Contact
Kara Panzer
Interim Director of Public Relations
Division of University Relations
845-475-4594
[email protected]

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