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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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