What are the two primary advantages of using correlated groups, ...

[aabwk4]

What are the two primary advantages of using correlated groups, as opposed to independent
  groups, in an experiment?
 
  A) better control over extraneous variables and requires fewer IVs
  B) easier to manipulate and reduction of error variation
  C) requires fewer IVs and is more common in psychological research
  D) better control over extraneous variables and reduction in error variation

Question 2

A recent study examining the effects of color on mood revealed that dark blues improved mood
  in men more than for women, but that dark greens improved mood more for women than men.
 
  Besides giving you some ideas for painting your house, this finding best represents what type of
  result?
  A) measured B) main effect for color
  C) interaction D) ex post facto

[cloud]

Answer to Question 1

D

Answer to Question 2

C

[aabwk4]

TYSM

[ecabral0]

Gracias!