A Frequent Criticism of Single-Case Designs Is That the External

Multiple Choice

A frequent criticism of single-case designs is that the external validity of these designs is limited.Which of the following is not an argument against this criticism?

A) Single-case designs can be done with small groups of individuals rather than with a single individual.
B) Multiple-baseline designs across subjects can demonstrate the effectiveness of an intervention for several individuals.
C) Single-case designs allow for successive administrations of the same intervention to the same person.
D) Interventions in single-case designs are often ones that produce dramatic and sizable changes in behavior.