What are the two central features of a pretestposttest control ...

[debasdf]

What are the two central features of a pretestposttest control group design?
 
  a) One group and the dependent variable is posttest scores.
  b) Two groups and the dependent variable is the pretest scores.
  c) One group and the effect of the intervention is determined by the change between pretestposttest.
  d) Two groups and pretestposttest scores are compared to assess the change.

Question 2

How can posttreatment differences occur between groups even when the treatment has no effect?
 
  a) There are initial group differences.
  b) Subjects adopt an apprehensive subject role.
  c) Participants display reactivity.
  d) There were lapses in treatment integrity.

[essyface1]

Answer to Question 1

Correct Answer: d

Answer to Question 2

Correct Answer: a

[debasdf]

Thanks for the timely response, appreciate it

[xiazhe]

TYSM