Choose all of the correct alternatives. People who participate in research may behave differently simply because they receive special treatment. This
a. is called the Hawthorne effect.
b. can threaten external validity.
c. is called sampling bias.
d. is called experimental mortality.
Ans: a,b
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Indicate whether the statement is true or false
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A difficulty in constructing matching items is finding material that is
A. homogeneous. B. interesting. C. related to the teaching objectives. D. unquestionably true.
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"Badabidabada" illustrates reduplicated babble
Indicate whether the statement is true or false.
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Which aspect of diversity has a powerful cultural role in enhancing or limiting access to school and life opportunities?
a. Religion b. Age c. Race d. Education
Education