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Multiple pretest and posttest measures are valuable in before-and-after designs because they decrease the possibility of internal invalidity due to ______.
French Involvement
Participation or engagement by France or its citizens in international matters, conflicts, or alliances.
Native Americans
Indigenous peoples of the Americas, including various tribes, nations, and ethnic groups, each with their own distinct cultures, languages, and histories.
Rival Colonies
Settlements or territories established by competing European powers in the New World, often leading to conflict over land, resources, and influence.
English Colonies
Settlements established by England in various parts of the world, notably in North America, during the 17th and 18th centuries.
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