The history of ethics often presupposes rationalist thinking on moral issues. An alternative to rationalism has been proposed by the social intuitionist model. This model suggests the bulk of our moral decisions are ‘gut reactions’ or intuitions. Unlike the rationalists, which support reasons and deliberation to draw moral conclusions, intuitionists argue such reasoning is used to support preconceived ethical decisions. This paper provides the first investigation to determine if intuitionism has any validity within business ethics. Using data from the Defining (...) Issues Test and individual journal entries, results indicate discussion-based pedagogy improved the moral reasoning of participants but had very little influence over their beliefs. In short, the social intuitionist model is supported by this study. Most importantly, ethics education that focuses on peer-to-peer discussion can change how students’ reason about moral problems and should be heavily incorporated into classrooms. (shrink)