The advantage of using a withdrawal design as part of a ...

[Marty]

The advantage of using a withdrawal design as part of a single-case experiment is that the researcher can
 
  a. counterbalance the research design with additional measures to improve internal and external validity.
  b. control for the placebo effect.
 c. conduct a true double-blind experiment.
 d. determine whether improvements gained with treatment are lost when the treatment is withheld.

Question 2

One important difference between a typical case study and the single-case experiment is that during the single-case experiment, behavior is generally
 
  a. manipulated.
 b. controlled by the experimenter.
 c. measured more than once.
 d. observed in the natural environment.

[kkenney]

Answer to Question 1

d

Answer to Question 2

c