Random assignment is essential to establishing causality because it
a. permits researchers to verify that they have a diverse and representative sample of participants.
b. reduces the possibility that individual characteristics of the participants produced the observed results.
c. increases the external validity of the experiment and virtually eliminates issues of reliability.
d. allows researchers to determine whether or not their operational definitions reflect the variables of interest.
b
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What are legal documents that direct health care professionals to refrain from performing certain procedures that would keep a terminally ill or severely disabled patient alive?
a. wills b. death wills c. living wills d. terminal wills
Someone asks you for suggestions about how to improve the college. Under which circumstance will you probably list the fewest suggestions?
a. If you have visited other colleges that seem more successful b. If you hope to be a college professor some day c. If many other students are also submitting ideas d. If you think other students look up to you with admiration
__________ glutamate activity, resulting in __________, may be responsible for negative and cognitive symptoms in schizophrenia.
A. Increased; hypofrontality B. Decreased; hypofrontality C. Increased; hyperfrontality D. Decreased; hyperfrontality
Tony is mentally rehearsing how he will ask his boss for a raise. Tony is using mental images to
a. change his feelings. b. make a decision. c. prepare for some action. d. aid memory.