PSY 301 Lecture Notes - Lecture 18: Meta-Analysis, Brian Nosek, External Validity
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Ivs: type of content (violent or not), type of media (tv or video games) Iv: screen image (sculpture or not), type of number (2 or 10 digit) There was a main effect for type of screen saver, since the one with the sculpture significantly differed from the blank screen. There was not a main effect for number of digits, since the results of the levels did not differ. There is no interaction since the digits did not have an effect on the effectiveness of the screen saver. To be important, a study must be replicable. It has actually been replicated not just theoretically able to be replicated. More weight is given to replication studies that were conducted by independent researchers instead of the original researcher. When a finding cannot be replicated in a different lab, it calls into question whether the original result can only be obtained under very specific conditions.