There is a clear articulation of how items can be written for the DFE approach in Smith (2008). In short, each question is composed in two parts conjoined by a grammatical structure that does the work of '...helped me to learn...'. The first part of the question indexes the teaching and learning activity (e.g. 'the lab session on dissection...') and the second part indexes the learning objective ('...how to dissect the human torso.').