This core textbook introduces psychology students to research methods. The author’s principal goal is to present methods in a way that will lend coherence to the material. He does this by providing a meaningful framework based around Campbell and Stanley’s "threats to validity" and by organizing the book around the phases of the research process. In addition, in his approach and via boxed features, the author encourages and models a process of critical thinking for students.

Formulating the Research Hypothesis

Formulating the research hypothesis
  • A Quick Guide to Chapter 2: The Hypothesis
  • Introduction to the Chapter
  • Origins of Hypotheses
    • Sources of Hypotheses and Exemplar Studies
      • Personal Observation
      • Other People's Experiences
      • Psychological Theory
      • Previous Research
      • Serendipitous Research Results
      • New Technologies
      • The Need to Solve Practical Problems
    • Recycling the Examples
  • Building a Better Hypothesis
    • Conceptual Validity
    • The Literature Review
  • Review Questions and Exercises

A Quick Guide to Chapter 2: The Hypothesis

The first step in the research process is formulating the research hypothesis. In psychology, the hypothesis usually ties together two constructs. In reverse order, the constructs are, first, some behavior of interest to the researcher and, second, its suspected or putative cause (later, as we've seen already, to become the dependent and independent variables, respectively). The constructs are tied together in a causal assertion; in our well-worn example, ...

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