In the first study to make plain the negative consequences of such behavior, 49% of 164 female MBA graduates said in a survey that they have tried to advance in their careers by sometimes engaging in at least one of 10 sexual behaviors, including crossing their legs provocatively or leaning over a table to let men look down their shirts.

The other half said they never engaged in such activity, and those women have earned an average of three promotions, vs. two for the group that had employed sexuality. Those who said they never used sexuality were, on average, in the $75,000-$100,000 income range; the others fell, on average, in the next-lowest range, $50,000 to $75,000.

In other words, sex may sell, but it doesn't pay.