Nonequivalent comparison group designs differ from randomized ...

[burchfield96]

Nonequivalent comparison group designs differ from randomized field experiments because they do not use:
 
  a. random assignment to conditions.
  b. quantitative observation.
  c. standardized measurement.
  d. longitudinal design.

Question 2

Randomized assignment to conditions in experiments greatly strengthens the:
 
  a. control of extraneous or confounding variables.
  b. likelihood that different outcomes are due to the intervention or innovation.
  c. ability to determine cause and effect.
  d. all of the above

[Laurenleakan]

Answer to Question 1

a

Answer to Question 2

d