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Concept Quiz 5

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208044894independent variablethe variable that is manipulated by the experimenter
208044895dependent variablethe variable that is measured to see what effect the independent variable had
208044896placebosomething given to some of an experiment's participants in order for them to think they are receiving the real treatment
208044897double-blind designan experimental procedure in which neither the research staff nor the research participants know who is receiving the treatment or placebo
208044898placebo effectan observed improvement in subjects because subjects believe a change will occur
208044899experimenter biasany effect that the expectations of the researcher may have had on the measurement and recording of the dependent variable
208044900confounding variablesfactors that cause differences between the experimental group and the control group other than the independent variable
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