It is impossible to use any single discipline technique without including aspects of other techniques. Tone of voice and facial expression impinge on what is said. To avoid communicating conflicting messages adults should strive for consistency. The environment, body language and verbal and social response should combine to communicate a similar message to the child.
Perhaps another way to approach the interaction of all techniques is the eclectic approach. Overuse of a technique is not a problem with the eclectic approach. Through this approach one can adapt a variety of techniques into a system to fit the individual adult and the individual child.
Ronald K. Mullis and Ann K. Mullis are with North Dakota State University.