A double-blind study is one in which neither the participant nor the experimenter knows what condition the participant is in.
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Q4: Placebos are only effective for psychological conditions
Q5: In a between-subjects experiment, each participant is
Q6: Experimenters manipulate independent variables and control extraneous
Q7: Rosenthal and Fode's "maze-dull" rats (1963) had
Q8: Darley and Latané (1968) manipulated the number
Q10: Research has shown that people in pain
Q11: A new headache treatment is proved effective
Q12: Participants in a waitlist control condition never
Q13: Experiments always involve the comparison of two
Q14: All extraneous variables are confounding variables.
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