Random assignment of participants to groups increases the ...

[HCHenry]

Random assignment of participants to groups increases the probability
 
  A) that all participants will finish the experiment.
  B) that the groups are equivalent at the beginning of the study.
  C) that the groups are equivalent at the end of the study.
  D) that the groups are different from one another.

Question 2

In controlling variance, a researcher increases
 
  A) generalizability.
  B) external validity.
  C) reliability.
  D) internal validity.

[blfontai]

Answer to Question 1

Answer: B

Answer to Question 2

Answer: D

[HCHenry]

TYSM

[AmberC1996]

Excellent