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.

Measuring Variables


Image 11

After studying this chapter, students should be able to

  • Compare the various methods that researchers use to ask questions
  • Define the terms social desirability and response set and propose ways to reduce their effects
  • Compare the various ways in which researchers measure observable behavior
  • Explain how precision of measurement affects statistical power
  • Identify the difference between a test, a scale, and an inventory
  • Describe the commercially available tests of intelligence and personality

In a court case, a witness was asked the following question by the prosecutor: “Did you know this person with whom you met on July 7?”

The witness responded, “No.”

The prosecutor sat down, confident that the jury members believed that the witness did not know who the person was with whom she had met on July 7.

The defense ...

  • 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