Assume that Latané and Darley want to demonstrate the external validity of their 1968 experiment on bystander intervention.To do this,they conduct a study in which participants solve crossword puzzles alone,or in large or small groups.While the participants are working on the puzzles,they overhear a woman fall from a ladder and cry out,"Oh,my leg! I can't move it!" The researchers then observe and record the number of participants who attempt to help.The study described here represents a(n)________ of the original "seizure" study.

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This study represents a replication of the original "seizure" study, as the researchers are attempting to see if the same results can be found in a different situation with different stimuli. This is a common way to test the external validity of a study and increase confidence in its generalizability. Option A (needless duplication) is incorrect, as the replication serves a purpose in testing external validity. Option B (encore) and option C (psychological copy) do not accurately describe the nature of this type of study. Option D (internal validity check) is also incorrect, as this study is specifically aimed at testing external validity.

Assume That Latané and Darley Want to Demonstrate the External