The threat to the internal validity of experiments that is called "maturation" is best defined
as:
a. changes occurring within experimental subjects that are due to the passage of
time.
b. subjects becoming familiar with measuring devices used in experiments after
they have been administered repeatedly.
c. the tendency for extremely mature experimental subjects to regress toward the
mean of the group over time.
d. historical changes that occur between administration of the pretest and the
posttest
A
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Answer the following statement true (T) or false (F)
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Answer the following statement true (T) or false (F)
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