"Our findings indicate that women find themselves in precarious leadership positions not because they are singled out for them, but because men no longer seem to fit. There is, of course, a double irony here. When women get to enjoy the spoils of leadership (a) it is not because they are seen to deserve them, but because men no longer do, and (b) this only occurs when, and because, there are fewer spoils to enjoy."
Bruckmüller, S. & Branscombe, N. (2010). The glass cliff: When and why women are selected as leaders in crisis contexts. British Journal of Social Psychology, 49 (3), 433-451 BPS Research Digest