“…Not only is this a major frustration that analysts must live with; it is also a major impediment to the effective study of the analytic process and the results of analyses. It is for this reason that a number of our colleagues, notably Pfeffer (1961), Schachter and Johan (1989), Oremland, Blacker, and Norman (1975), Kantrowitz (1986), Wallerstein (1986), and Erle and Goldberg (2003), as well as a number of European authors, have conducted follow-up studies. Usually these are not done by the treatment analyst but by a colleague who interviews the patient.…”