A classmate designs the following experiment. What advice would ...

[itsmyluck]

A classmate designs the following experiment. What advice would you give him to improve upon it? Group A M T M Group B M T(zero level) M
 
  a. to specify both groups as receiving zero level of T
  b. not to perform a pretest-posttest
  c. to randomly assign participants to groups
  d. to randomly select participants from the population

Question 2

In a Solomon four-group design:
 
  a. participants who get a pretest also get a posttest.
  b. not all participants receive the pretest.
  c. not all the participants received the posttest.
  d. all participants receive a pretest but not all receive a posttest.

[Ddddd]

Answer to Question 1

C

Answer to Question 2

B