What is ... a modified essay question?

Medical education is moving to a more problem-orientated basis than was the case formerly. The Modified Essay Question has its origins in this movement, being introduced in the late 1960s as one assessment technique more suited to general practice than other traditional assessment methods. In its original form it is a paper exercise based on an evolving situation presented by a patient in primary care. Experience with the technique in different countries is briefly summarised, and its applications to assessment and to teaching are discussed. Despite shortcomings this method appears to be standing up to the test of time.