A study of 1800 male UK academics reveals that professors are twice as likely to have beards as lecturers:
Women in academia lose out by a whisker: While 10.5 per cent of lecturers were bewhiskered, the figure rose to 13.6 per cent for senior lecturers, 16.7 per cent for readers and 21.4 per cent for professors.
The study's authors suggest that whatever it is that makes departments like hairy faces may also contribute to discrimination against women:
One theory is that being unshorn makes men more likely to be appointed to professorships, as facial hair is linked with high testosterone and aggression.
Hmm. Does that mean that if I want to convince my students that I'm really just a pussy cat then I should shave my beard?