Jamal was continually late to work. In an effort to reduce this behavior, his supervisor told him ...

Jamal was continually late to work. In an effort to reduce this behavior, his supervisor told him that for each minute he was late to work, it would be deducted from his break time. During the week, the supervisor noticed that Jamal was no longer coming late to work. In an attempt to see if it was indeed his intervention that was the cause of Jamal's behavior change, the supervisor told him that the following Monday, there would no longer be a penalty for coming late to work. Jamal's behavior of lateness returned. Convinced, the supervisor reinstated the consequence. Jamal again began arriving to work on time. What design does this procedure describe?
 
  a. Teaching Design
  b. Changing Conditions Design
  c. ABAB
  d. AB

Question 2

The problem with an ABA design is that
 
  a. You may want to leave the participant in their new state, rather than return them to the old one
  b. The effect of the treatment may be reversible
  c. People don't want to continue in the study after the initial treatment
  d. It is unethical