Studs vs. Trolls

This is from a textbook I'm teaching from this semester:

"In a study of over 700 newly hired MBA graduates, men judged to be better-looking obtained starting salaries more than $2000 higher than men of below-average attractiveness. Once hired, women judged to be above-average in attractiveness tended to earn over $4000 more per year than women employees rated as less attractive. Studies of jury decision making have determined that jurors are less likely to find physically attractive defendants to be guilty, and tend to recommend less severe punishments for attractive defendants."

As a compassionate and egalitarian-minded person, I'm forced to ask the tough questions: What is it about the ugly that makes them so lousy at their jobs, and why do they tend to be such dirty criminals?