To carry out a matched-subjects design, researchers must a. ...

[rosent76]

To carry out a matched-subjects design, researchers must
 
  a. utilize each matching variable and have access to a reliable and valid way to assess it.
   b. measure the matching variable and establish groups of subjects who are similar on that
   variable.
   c. randomly assign subjects from each set to the appropriate experimental groups.
   d. all of the above

Question 2

In terms of remnant measures of behavior at a crime scene, hair samples, fingerprints, and clothing fibers would all be considered
 
  a. archival data.
  b. Likert data.
  c. physical traces.
  d. content analyses.

[Mholman93]

Answer to Question 1

d

Answer to Question 2

c