Please enable JavaScript.
Coggle requires JavaScript to display documents.
Ch 10: Experimental Research
Manipulate, compare, determine causality,…
Ch 10: Experimental Research
Manipulate, compare, determine causality
- Basic Experimental Concepts
-
-
Treatment & Control Groups
Treatment group receives intervention
Control group does not receive intervention
-
- Two- Group Experimental Designs
-
- Treats to Internal Validity
History- outside event affects outcome
Maturation- natural change over time
Testing- pretest influences posttest
Instrumentation- measurement changes
Mortality- participants drop out
Regression to mean- extreme scores move toward average
Experimental Research Challenges
Weak or absent theory
Poor measurement
Inappropriate research designs
Inconsistent treatments/ tasks
Use pilot tests and manipulation checks
-
-
- True vs. Quasi- Experiment
-
- Purpose & Foundation
• Tests cause-and-effect relationships
• Best for explanatory research
• Researcher manipulates the independent variable
• Measures the effect on the dependent variable
• Strong internal validity• Can occur in:
•Laboratory settings
•Field settings
-