The two essential ingredients of a social psychological experiment are

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Control is necessary to eliminate extraneous variables that could influence the results, and random assignment is necessary to ensure that each participant has an equal chance of being in each condition, which increases the internal validity of the experiment. Random sampling is not necessarily required for social psychological experiments, as long as the sample is representative of the population of interest. Correlation is a statistical technique used to analyze the relationship between variables, but it is not an essential ingredient of an experiment.

The Two Essential Ingredients of a Social Psychological Experiment Are