What is the purpose of random assignment in the between groups ...

[tiffannnnyyyyyy]

What is the purpose of random assignment in the between groups factorial experiment? It _____.
 
  a. doesn't exist; matching is always used
  b. is a way for controlling the effect of the treatment
  c. assures that groups are equivalent before the treatment
  d. doesn't exist; each subject is her or his own control

Question 2

An experimenter is conducting a factorial study in which she is examining the effects of threat (low vs. high) and reward (none, small, and large) on risk taking. Which of the following would NOT be one of the treatment conditions in this study?
 
  a. high risk and low threat c. high threat and small reward
  b. low threat and large reward d. high threat and no reward

[TheNamesImani]

Answer to Question 1

C
Random assignment is used to control for such things as personality variables and experiential differences among participants at the outset of the experiment.

Answer to Question 2

A
Risk taking is the dependent variable and forms no part of the treatment conditions.

[tiffannnnyyyyyy]

Thanks for the timely response, appreciate it

[diana chang]

Gracias!