Recall and retrieval of anatomical knowledge.

The performance outcomes of a course in anatomy based on the use of specific behavioural objectives and group discussion techniques have been followed up over a period of 21 months. At the end of this time attrition of knowledge averaged 17-5% of the original performance. 72% of students still performed at better than pass level. Performance levels on retest were significantly associated with original levels of performance and were significantly better in respect of items 'reinforced' by subsequent teaching in other subjects. It is suggested that the performance on retest also reflected the nature of the original course, which was dependent on the use of general and specific behavioural objectives and on active learning methods using group discussion techniques.