Elizabeth engages in skin scratching that never occurs when others are present. Additionally, no one has commented on this behavior, and it has occurred undetected by others for quite a long while. Elizabeth hides the scratch marks under clothing. The scratching behavior is MOST likely to be maintained by:

Tommy is looking at a photo album with his dad. He looks at his dad and then points to a picture of his mom and says, "Mommy." This is an example oF.

The Smiths' daughter, who has autism, has been receiving ABA services for one-and-a-half years from Andrew, a behavior analyst. Andrew's experience and training is in special education. Recently, the Smiths' other child has been behaving differently and they suspect that he may be clinically depressed. The Smiths would like their son to receive services from Andrew because their family is familiar with him and he has provided effective interventions for their daughter. The Smiths ask Andrew to confirm their suspicions about their son. What should Andrew do?

In the past, Parnelli consistently drove at high speeds on city streets. However, he was pulled over and had to immediately pay a very expensive fine. Afterward, Parnelli very seldom drove at high rates of speed. Which of the following might account for the effect of the lost money resulting from paying the fine?

During the hour immediately following meals, Bill asks for more food. Data are collected only during this hour after each meal. Which method of data collection would be MOST accurate?