PSYCH 101 Lecture Notes - Lecture 2: Informed Consent, Syphilis
21 Oct 2016
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Purpose of a experiment is to determine if purposely changing one variable causes changes in another variable. Experimental method can be used to determine cause and effect, but correlational method does not. Experimental group: participants who receive some special treatment. Control group: participants who do not get the special treatment. Purposely varied or manipulated to see what will happen. Expected to respond due to the experiment; the outcome. Research is only helpful to the extent that it is reliable and carried out with as little bias as possible. Best way to determine if findings are accurate is to replicate a study. Best if different researcher does it with a different group of people. Sampling bias: when the sample is not a good representative of the population. Social desirability bias: when participants try to create good impression of themselves. Experimenter bias: when researcher"s expectations or hopes about the outcome influence the result.
