Researchers patch-up quasi-experimental designs by a. adding ...

[panfilo]

Researchers patch-up quasi-experimental designs by
 
  a. adding comparison groups
  b. measuring hypothesized mediators
  c. examining the effects of additional quasi-independent variables
  d. measuring additional dependent variables
   e. all of the above

Question 2

Donald Campbell made many contributions in the area of
 
  a. statistical analyses
  b. psychological measurement
  c. physiological research
   d. quasi-experimental designs
  e. laboratory experimentation

[kardosa007]

Answer to Question 1

E

Answer to Question 2

D

[panfilo]

Wow, this really help

[ryhom]

Thanks for the timely response, appreciate it