Best achieved through random selecon of parcipants to

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Unformatted text preview: la*on. 4.    The par<cipants in the experimental and control groups are iden*cal. The measurement of the dependent variable is completely accurate and appropriate for what it is supposed to be measuring. The par<cipants in the experimental and control groups are iden*cal.   Best achieved through random assignment of par<cipants to different groups/condi<ons   Ensures that there are no pre ­exis*ng differences between the groups that could explain di...
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