Abstract
We trained a child with autistic behavior in Free operant settings. Then, we taught him to perform some tasks in controlled settings. In picture-card-naming task, he refused to do the task whenever he could not name the picture-card. Then we tried to teach him the question "What's this?", according to Koegel (1995) 's suggestion. Though some details of our procedures were different from Koegel's, as the child began to learn the question, he became more cooperative, and his voluntary naming behaviors increased. After this, his asking behavior generalized to Free operant settings and his daily life. Considering Koegel's results and ours, we recognize that the most important points are that social and natural reinforcers are effective, and that knowing the name as an answer to "What's this?" has a reinforcing effect.
