A 25-year-old man who smokes says his smoking is not a problem now because he is young and healthy. He will quit when he is “older.” The therapist asks him, “What do you consider to be older?” The young man answers, “You know, middle age, like 40 or 50.” The therapist says, “Didn't you tell me your grandfather died from lung cancer at age 49? What would his middle age have been?” The young man quietly says, “I guess my age. Maybe I should think about cutting back.” What technique is this an example of?