An activity called Purple Dragons and Yellow Toadstools, originally reported in 1987 as a training activity for jurors, was adapted as a priming exercise for a unit on teaching research ethics with undergraduate students. In this activity, learners develop skills for building negotiated consensus. The procedure involves individuals’ ranking 10–15 moral transgressions and/or legal violations followed by a small group discussion in order to arrive at an agreed-upon ranking by the team. The framework has proved to be quite flexible, adaptable (...) to different subject areas and with different populations of students. (shrink)