Unformatted text preview: 1. The Wonder Pill – Independent Variable 2. Schizophrenia – Dependant Variable ii. Failure to use Control Group 1. Improvement could be due to: a. Spontaneous remission b. Suggestion of pill’s effect c. Getting attention d. A change in weather, lighting, etc. . b. Basic Experimental Design i. Define the population of subjects ii. Draw a random sample iii. Divide sample into experimental and control groups c. Necessary Controls i. Placebo 1. Controls for Autosuggestion (Placebo effect), Hawthorne Effect (increase in motivation from getting attention) ii. Keep subjects “blind” 1. Controls for John Henry Effect a. Above average performance in response to competition iii. Keep experimenter “blind” 1. Controls for Experimental Expectancy a. Facilitative communication with autistic patients...
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- Scientific control, Controlling for a variable