Researchers have discovered there could be a good reason why women spend so long in the morning getting ready for work─they get paid more if they wear makeup and do their hair. Sociologists Jaclyn Wong and Andrew Penner concluded that attractive people get paid around 20 percent more than what they called "average" people. They found that both physically attractive men and women tended to earn more than average-looking employees. They added that the more a woman cared about her looks, the more attractive she appeared. However, the researchers also said that for men, only about half of the effect of attractiveness was due to grooming. This is mainly because women are more readily judged by their looks, so presentation becomes important to them. The study was conducted by the universities of Chicago and California. The researchers analyzed data from 14,000 participants who were questioned about their salary, job, education, personality, social behavior and other characteristics. The interviewers were also asked to rate each participant on how attractive and well-groomed they were. Researchers said that people were biased when it comes to beauty because of a "halo effect." They think someone who is attractive on the outside will also be beautiful on the inside. The researchers noted that the idea that humans are influenced by beauty bias is not new.