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CHAPTER 1 Introduction and Research Methods
Part B—Descriptive and Experimental Designs
DESCRIPTIVE RESEARCH METHODS
Naturalistic Observation
DESCRIPTIVE RESEARCH METHODS
Case Studies
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DESCRIPTIVE RESEARCH METHODS
Surveys
EXPERIMENTAL METHOD
Manipulation of variables
Independent (manipulated, predictor)
Dependent (measured, outcome, criterion)
EXPERIMENTAL METHOD
Group assignment Random assignment
Every person in the study has an equal chance of being in either
group—like picking names out of a hat
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EXPERIMENTAL METHOD
Experimental group
The group that “gets” the independent variable
EXPERIMENTAL METHOD
Control group
The group that is used for comparison
Practice effects—did they get better just because of practice?
Expectancy effects—did they get better just because they
expected to?
• Blind studies
Demand characteristics—did they get better because the
experimental demanded more from them?
• Double-blind studies
Limitations of experimental design
JOURNAL REFERENCES
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LIBRARY SEARCHES
www.jtcc.edu-->Library-->Find ArticlesSearch
article indexesDatabasesPsycNET
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