To be a history threat, the external event must occur:
A)constantly during the experiment.
B)at the beginning of the experiment.
C)systematically, affecting most members of the group.
D)intentionally, induced by the experimenters.

Question

Quizplus · Accepted Answer

For an event to be considered a history threat, it must systematically affect most members of the group. This could happen at any point during the experiment, not just at the beginning. It is not necessary for the event to occur constantly or to be intentionally induced by the experimenters.

To Be a History Threat, the External Event Must Occur