Evaluating liaison program effectiveness: the use of unobtrusive measurement.

The author suggests that the goal of liaison psychiatry as well as its organizational and clinical properties require the use of measures which are non-reactive and developmental in nature. In this paper four categories are theorized as representing the implicit working assumptions of nonpsychiatric housestaff in clinical formulation. By analyzing the overt and latent assumptions of the questions presented to a liaison psychiatrist in patient care conferences, the author illustrates how the assumptions can change through six levels of development. Changes within the assumptions are then used as criteria for program effectiveness since the working assumptions represent preconditions to holistic care. Potential uses of this global scheme for evaluating liaison programs are suggested.