According to your text,when conducting experiments in social psychology,there is almost always a trade-off between

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In social psychology experiments, there is often a trade-off between internal validity (the extent to which the experiment establishes a trustworthy cause-and-effect relationship between the treatment and the outcome) and external validity (the extent to which the results of a study can be generalized to other situations and to other people). High internal validity often comes at the expense of external validity, and vice versa.

According to Your Text,when Conducting Experiments in Social Psychology,there Is