To all you aspiring Mrs. Maisels out there, I’ve got bad news: Don’t try to be funny. Certainly not in the workplace. Because if you tell jokes or deploy humor in a business setting, you will lose credibility, jeopardize your career and fall flat on your face.

That sums up the study from researchers at the University of Arizona and the University of Colorado Boulder who analyzed reactions to the use of humor by male and female leaders. More than 200 participants watched videos of a manager making a sales pitch in which a male or female manager either used humor or played it straight.