dishonesty can drop by 12%. Some professors may have little incentive to reduce cheating in their classes below a point that would otherwise be obvious to outside observers, as they are rated by how many research papers they publish and research grants they win for the college, and not by how well they teach. Teachers can, however, accidentally promote cheating behavior. A study found a correlation between how harsh or unfair a professor is perceived as and academic misconduct, since students see cheating as a way of getting back at the teacher. Also, students who see themselves in a competition, such as when the teacher is using a grade curve, are more likely to cheat. Research has also shown a correlation between goal orientation and the occurrence of academic cheating. Students who perceive their classroom to have high mastery goals are less likely to engage in cheating than those who perceive their classroom to emphasize performance goals. The most important contextual causes of academic misconduct are often out of individual teachers' hands. One very important factor is time management. One survey reported two-thirds of teachers believed that poor time management was the principal cause of cheating. Often social engagements are to blame. It has been found that there is a strong correlation between extracurricular activities and cheating, especially among athletes, even those on intramural teams. It has also been found that student cheating rates rise significantly the more time students spend playing cards, watching television, or having a few drinks with friends. Relatedly, fraternity or sorority membership is also strongly correlated with academic misconduct. One of the most important causes of academic misconduct is the contextual factor of an environment of peer disapproval of cheating, that is, peer pressure. Psychologists note that all people tend to follow the norms of their peer group, which would include norms about academic dishonesty. Thus, students who believe that their peers disapprove of cheating are less likely to cheat. Indeed, multiple studies show that the most decisive factor in a student's decision to cheat is his perception of his peers' relationship with academic dishonesty. For instance, on average 69% of students cheat at colleges with low community disapproval of academic misconduct, whereas only about 23% of students cheat at colleges with strong community disapproval of academic misconduct. Peer pressure works both ways, as a study found that there is a 41% increase in the