The adaptive nature of self- enhancement might be the answer. Conveying the information that one has desirable characteristics is beneficial in a social environment. People may try to deceive others about their characteristics, but deception has two main disadvantages. First, it is cognitively taxing because the deceiver has to hold two conflicting representations of reality in mind: the true state of affairs and the deception. The resulting cognitive load reduces performance in other cognitive functions. Second, people are good at detecting deception and they show strong negative emotional reactions toward deceivers. Since in self- enhancement people truly believe that they have desirable characteristics, they can promote themselves without having to lie. Self-enhancement also boosts confidence. Researchers have shown that confidence plays a role in determining whom people choose as leaders and romantic partners. Confident people are believed more and their advice is more likely to be followed.