strongest demographic correlations with academic misconduct in the United States is with language. Students who speak English as a second language have been shown to commit academic dishonesty more and are more likely to be caught than native speakers, since they will often not want to rewrite sources in their own words, fearing that the meaning of the sentence will be lost through poor paraphrasing skills. In the University of California system, international students make up 10% of the student body but comprise 47% of academic dishonesty cases. In British universities, students from outside of the European Union make up 12% of the student body but comprise 35% of academic dishonesty cases. Impostor syndrome and academically dishonest behaviours have been found to be correlated. Students who do not believe they deserve to be where they are in terms of academics actively engage in self-sabotaging behaviour (plagiarism and cheating) in order to prove that they do not belong where they are while students who do not suffer from impostor syndrome are less likely to engage in academic dishonesty. Contextual causes Contextual factors that individual teachers can affect often make the least difference on cheating behavior. A study found that increasing the distance between students taking an exam has little effect on academic misconduct, and that threatening students before an exam with expulsion if they cheat actually promotes cheating behavior. Indeed, increased exam proctoring and other methods of detecting cheating in the classroom are largely ineffective. According to one survey of American college students, while 50% had cheated at least once in the previous six months, and 7% had cheated more than five times in that period, only 2.5% of the cheaters had been caught. As teachers invent more elaborate methods of deterring cheating, students invent even more elaborate methods of cheating (sometimes even treating it as a game), leading to what some teachers call a costly and unwinnable arms race. Increased punishment for academic misconduct also has little correlation with cheating behavior. It has been found that students with markedly different perceptions of what the severity of the punishment for cheating were all equally likely to cheat, probably indicating that they thought that increased penalties were immaterial since their cheating would never be discovered. However, if a professor makes clear that they disapprove of cheating, either in the syllabus, in the first class, or at the beginning of a test, academic