PSYC 235 Chapter Notes - Chapter 4: Randomized Controlled Trial, Internal Validity, Statistical Significance
13 May 2017
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Before we discuss specific strategies we must consider several general ways of evaluating research. Hypothesis: an educated or statement to be tested by data. Research design: how you want to test for the hypothesis including aspects like: dependent variable: some aspect of the phenomenon that is measured and is expected to be changed or influenced by the independent variable (ex. How much alcohol research participants choose to drink) Independent variable: the aspect manipulated or thought to influence the change in the dependent variable (ex. Internal validity: the extent to which the results of the study can be attributed to the independent variable. External validity: the extent to which the results can be generalized or applied outside the immediate study. Once a researcher decides what they want to study, the next step is to put it into words that are unambiguous and in a testable form.
