Factorial designs are useful because they a. allow multiple ...

[Zoey63294]

Factorial designs are useful because they
 
  a. allow multiple independent variables. c. examine interaction of variables.
  b. build in extraneous variables. d. All of these are true.

Question 2

Criterion contamination occurs when
 
  a. a test is lacking in construct validity.
  b. the criterion measurement is found to be invalid.
  c. knowledge of predictor test scores influences decision-making.
  d. errors are made in predicting criterion performance.

[fraziera112]

Answer to Question 1

D

Answer to Question 2

C

[Zoey63294]

Thanks for the timely response, appreciate it

[rleezy04]

Excellent