Dr Chessick uses the metaphor of a television set in order to illustrate Freud's notion of the therapist's unconscious as a receptive organ for the transmitting unconscious of the patient. The therapist listens to the patient's transmissions on five different channels, represented by five orientations, stances, modes, or models, among which the therapist must switch back and forth on the patient's initiative. Furthermore, Dr. Chessick shows how to validate interventions in order to be sure that the therapist has indeed heard correctly. The five channels are: Freud's drive/conflict/defence...