Researchers commonly safeguard confidentiality by
A) changing the names of participants.
B) using participants that live far away from the research center.
C) using numerical codes for participant identification.
D) using initials only.
Answer: C
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In a large-scale comparison of the effects of several new medications on depression, the researcher must begin at
A) the naturalistic level in order to observe participants in their natural environment. B) a highly constrained experimental level in order to exert the necessary controls. C) a lower constraint level in order to gather as much personal information as possible without exerting too much control. D) the differential level of constraint because depression is a preexisting variable.
The Tax Reform Act of 1986 sharply reduced taxes in the upper bracket
Indicate whether the statement is true or false.