1975). When students were given the opportunity to cheat on a test, he found that only 15% of college students at the post-conventional stage cheated, whereas 70% of those at the pre-conventional stage did. However, Burton (1976) found that people only behave consistently with their moral principles on some kinds of moral behaviour, such as cheating or sharing toys, and concluded that generally it is likely that factors other than moral principles affect moral behaviour, such as the likelihood of punishment.