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How to Design and Evaluate Research in Education Book Cover
How to Design and Evaluate Research in Education, 5/e
Jack R. Fraenkel, San Francisco State University
Norman E. Wallen, San Francisco State University

Experimental Research

Chapter Outline


The Uniqueness of Experimental Research

Essential Characteristics of Experimental Research

Comparison of Groups
Manipulation of the Independent Variable
Randomization

Control of Extraneous Variables

Group Designs in Experimental Research

Weak Experimental Designs
True Experimental Designs
Quasi-Experimental Designs
Factorial Designs

Control of Threats to Internal Validity: A Summary

Evaluating the Likelihood of a Threat to Internal Validity in Experimental Studies

Control of Experimental Treatments

An Example of Experimental Research

Analysis of the Study

Purpose/Justification
Definitions
Prior research
Hypotheses
Sample
Instrumentation
Procedures/Internal Validity
Data Analysis
Results
Discussion