Because self-report and observed behaviors may not match, ...

[jwb375]

Because self-report and observed behaviors may not match, researchers are advised to use:
 
  a. sophisticated statistical measures.
  b. multiple measures.
  c. quasi-experimentation.
  d. valid surveys and questionnaires.

Question 2

The case of Semmelweis is important because it illustrates:
 
  a. the importance of ruling out factors.
  b. a longitudinal design.
  c. the necessity of debriefing.
  d. how bias can influence the outcome of a study.

[nathang24]

Answer to Question 1

B

Answer to Question 2

A