being more attractive receive higher public speaking fees than less attractive social scientists, whereas for natural scientists, relative unattractiveness is a comparative advantage in terms of public speaking fees. It is important to note that other factors such as self-confidence may explain or influence these findings as they are based on self-reported attractiveness as opposed to any sort of objective criteria; however, as one's self-confidence and self-esteem are largely learned from how one is regarded by their peers while maturing, even these considerations would suggest a significant role for physical appearance. One writer speculated that "the distress created in women by the spread of unattainable ideals of female beauty" might possibly be linked to increasing incidence of depression. Many have asserted that certain advantages tend to come to those who are perceived as being more attractive, including the ability to get better jobs and promotions; receiving better treatment from authorities and the legal system; having more choices in romantic or platonic partners and, therefore, more power in relationships; and marrying into families with more money. Those who are attractive are treated and judged more positively than those who are considered unattractive, even by those who know them. Also, attractive individuals behave more positively than those who are unattractive. One study found that teachers tend to expect that children who are attractive are more intelligent, and are more likely to progress further in school. They also consider these students to be more popular. Voters choose political candidates who are more attractive over those who are less attractive. Men and women use physical attractiveness as a measure of how "good" another person is. In 1946, Soloman Asch coined the Implicit Personality Theory, meaning that the presence of one trait tends to imply the existence of other traits. This is also known as the halo effect. Research suggests that those who are physically attractive are thought to have more socially desirable personalities and lead better lives in general. This is also known as the "what-is-beautiful-is-good effect" or physical attractiveness stereotype. Discrimination against or prejudice towards others based on their appearance is sometimes referred to as lookism (prejudice or discrimination based on physical appearance and especially physical appearance believed to fall short of societal notions of beauty). Some researchers conclude that little difference exists between men and women in terms of sexual behavior. Other researchers disagree. Symmetrically faced men and women have a tendency