Psychology Notes - 3. Regression to the mean-Random...

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Psychology Notes-12/10/10 Other reasons why people might improve over time: 1. Placebo/demand effects -Placebo group -No one knows which is which -Random assignment 2. Maturation -Placebo group in for the same amount of time -Random assignment
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Unformatted text preview: 3. Regression to the mean-Random assignment-Placebo group-same time 4. History-Random assignment 5. Selection bias-Random assignment-Randomized placebo-controlled, double-blind, clinical trial (RCTs)...
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