Experimental psychologists seeking to determine cause and effect relations between variables tend to view external validity as more important than internal validity.

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Experimental psychologists are more concerned with internal validity because this helps ensure that the experimental manipulations are causing the effects observed, rather than extraneous variables. External validity is still important, but it is often sacrificed in order to have higher internal validity in experimental designs.

Experimental Psychologists Seeking to Determine Cause and Effect Relations Between