The authors present their design for a clinical teaching exercise to study transformation in psychoanalysis. They chose a completed analysis from which to select the sessions retrospectively so that the clinical review exercise would not influence ongoing analytic process. The co-authors selected three tranches of clinical material, a few years apart, to be presented by the analyst. They studied the material with colleagues in the impressionistic manner of traditional clinical review, and then subjected it to more systematic examination, using a modified application of the Three-Level Model (3-LM) for assessing change. Their prediction was that the use of the 3-LM model could amplify the clinical impressions of the individual analyst and provide a way of being more specific about the changes, if any, that had occurred, and arrive at which theories best explained those changes.