In between subjects designs, there are two ways to assure ...

[B]

In between subjects designs, there are two ways to assure equivalency of groups. These are _____.
 
  a. counterbalancing and confounding c. standard deviation and z scores
  b. matching and random assignment d. all of these

Question 2

This technique involves presenting the various conditions in a repeated measures design in different orders to different participants.
 
  a. confounding c. nullification
  b. counterbalancing d. contamination

[matt95]

Answer to Question 1

B
The two methods for creating equivalent groups for a between groups design are matching and random assignment.

Answer to Question 2

B
This is the definition for counterbalancing.

[B]

TYSM

[cassie_ragen]

Wow, this really help