Transition-when the cervix dilates from about 7 cm. to 10 cm.-is generally considered the most difficult phase of labor and it is at this time that the couple who have learned a psychoprophylactic technique, such as the Lamaze method, face their most stringent test. Control can be precarious. When a couple know what to expect in transition, however, they are more likely to be able to remain in control of the labor. Because drowsiness is one of the