To be a history threat, the external event must occur... Group of answer choicesat the beginning of the experiment.intentionally, induced by the experimenters.constantly during the experiment.systematically, affecting most members of the group.
Question
To be a history threat, the external event must occur... Group of answer choicesat the beginning of the experiment.intentionally, induced by the experimenters.constantly during the experiment.systematically, affecting most members of the group.
Solution
To be considered a threat to the historical validity of an experiment, an external event must occur systematically, affecting most members of the group. This means that the event happens in a consistent, regular manner and impacts a large portion of the participants. This could potentially influence the results of the experiment, making it difficult to determine if the observed effects are due to the experimental manipulation or the external event.
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