Methods in Psychological Research introduces students to the rich world of research in psychology through student-friendly writing, compelling real-world examples, and frequent opportunities for practice. Using a relaxed yet supportive tone that eases student anxiety, the authors present a mixture of conceptual and practical discussions, and spark reader interest in research by covering meaningful topics that resonate with today’s students. In-text features like Conceptual Exercises, FYI sections, and FAQ sections with accompanying visual cues support learning throughout the research experience. The Fourth Edition equips students with the tools they need to understand research concepts, conduct their own experiments, and present their findings.

Selecting Research Participants


Image 12

After studying this chapter, students should be able to

  • Describe the difference between probability and nonprobability sampling methods and discuss each type of procedure
  • Explain the relationship between sample size and effect size
  • Discuss the relationship between statistical power and sample size

Have you ever received a phone call from someone who works for some research institute and wants a few minutes of your time? Have you received a questionnaire in the mail or online? Has anyone come to your door wanting to know what kinds of products you prefer? We certainly have experienced this. How come they picked you, you might have wondered? In this chapter, we discuss methods researchers use to select the people they want to study.

Whether you are surveying people on ...

  • Loading...
locked icon

Sign in to access this content

Get a 30 day FREE TRIAL

  • Watch videos from a variety of sources bringing classroom topics to life
  • Read modern, diverse business cases
  • Explore hundreds of books and reference titles