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Chapter 9: Experimental designs: Within-subjects designs - Coggle Diagram
Chapter 9: Experimental designs: Within-subjects designs
Within-subjects experiments and internal validity
Characteristics of within-subjects designs
Threats to internal validity of within-subjects designs
Confounding from environmental variables
Confounding from time-related variables
Instrumentation
Regression toward the mean
Order effects (practice, fatigue, and carry-over effects)
Maturation
History
Seperating time-related factors and order effects
Order effects as confounding variables
Application and statistical analysis of within-subjects designs
Two-treatment designs
Multiple-treatment designs
Dealing with time-related threats and order effects
Controlling time
Switch to a between-subjects design
Counterbalancing: Matchin treatments with respect to time
Counterbalancing and order effects
Limitations of counterbalancing
Counterbalancing and variance
Assymetrical order effects
Counterbalancing and the number of treatments
Comparing within-subjects designs with between-subjects designs
Advantages of within-subjects designs
Disadvantages of within-subjects designs
Choosing within- or between-subjects designs
Matched-subjects designs