PSY 321RESEARCH METHODS AND STATISTICS IN PSYCHOLOGY .

Review Questions Task 2

Chapter 5

Briefly identify the purpose of the survey research.

What two characteristics do surveys have in common, regardless of the purpose for which the survey was conducted?

You are going to conduct research using surveys. Would you choose to use a mail-in survey, face-to-face interviews, phone interviews, or an online survey? Why?

What are the main advantages and disadvantages of online surveys?

You want to assess the direction and extent of the change in your participants’ opinions over time. Which survey research design would you choose and why?

Explain the difference between a mediating variable and a moderating variable.

• Chapter 6
• Describe two reasons why psychologists conduct experiments.
• You notice that there is a selective loss of participants during your experiment. What preventative measures could you take to minimize or prevent this problem?
• How can the use of a placebo and double-blind minimize the effects of experimenter demand?
• Explain what a statistically significant result says about the effect of the independent variable in an experiment.

Briefly describe four ways in which we establish the external validity of research results.