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.

Experimental Design : Independent-Groups Designs

Experimental Design : Independent-Groups Designs


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After studying this chapter, students should be able to

  • Discuss why we do experiments and identify the steps to follow when conducting an experiment
  • Compare controlled experiments and field experiments and explain the advantages and disadvantages of each
  • Propose an experiment using a completely randomized and a randomized factorial design

A few years ago, one of the authors of your book read an article in a local newspaper with the headline “Don’t Take Engineering, Young Ladies, If You Hope to Marry!” The writer described some data obtained from a major university that indicated that female engineering graduates were less likely to marry than female graduates from other faculties. The reader was left with the impression that women were somehow dooming themselves to singlehood ...

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