A single-subject experiment that showed a 75 improvement in depression after a particular treatment ...

A single-subject experiment that showed a 75 improvement in depression after a particular treatment would certainly show _________, even without statistics
 
  a. Power
  b. Clinical significance
  c. ABAB design
  d. Mixed design

Question 2

A major advantage of single-subject research over group research is that
 
  a. it places emphasis on the behavior of individuals rather than on group averages
  b. the researcher does not have to be concerned with extraneous variables
  c. the knowledge gained can also be generalized to statements concerning group performance
  d. it is better suited for answering the question: Which of the various treatments is the most effective?

Question 3

A major advantage of single-subject research over group research is that
 
  a. the researcher does not have to be concerned with validity
  b. the knowledge gained can also be generalized to groups
  c. Individuals always act as their own controls
  d. it is better suited for answering the question: Which factor is the most effective?