A team of researchers is asked to determine the effectiveness of ...

[crazycityslicker]

A team of researchers is asked to determine the effectiveness of a psychological intervention on the reduction of school violence. What is the best method the researchers could use to test whether the intervention worked?
 
  a. Give a self-report survey to people who received the intervention.
  b. Observe the schools that received the intervention.
  c. Compare the level of violence at the schools before and after they received the intervention.
  d. Design an experiment comparing schools that received the intervention and those that did not based on random assignment.

Question 2

An experiment would be the best type of research design to determine whether Critical Incident Stress Debriefing (CISD) works. Why?
 
  a. Experiments can find positive relationships between variables.
  b. Experiments can describe behavior.
  c. Experiments can find cause-and-effect relationships.
  d. Experiments can control behavior.

[mk6555]

Answer to Question 1

Answer: D

Answer to Question 2

Answer: C

[crazycityslicker]

Excellent

[AngeliqueG]

Gracias!