RESEARCH METHODS THINKING CRITICALLY WITH PSYCHOLOGICAL SCIENCE
EXPERIMENTAL VARIABLES IN PSYCHOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the way in which you assign members of the random sample to the control or experimental group
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a statement of the procedures used to define research variables
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the experimental fact that is going to be manipulated or changed
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neither the experimenter nor the subject know who is in the control group or experimental group so that they won’t sway the results
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Detailed explanation-1: -A type of clinical trial in which neither the participants nor the researcher knows which treatment or intervention participants are receiving until the clinical trial is over. This makes results of the study less likely to be biased.
Detailed explanation-2: -Therefore, both research participants and researchers are blind to this information. Double-blind studies help in reducing the biases like the placebo effect, experimenter bias, and experimenter expectancy effect that hinder the results and conclusions of the study.
Detailed explanation-3: -A double-blind research design can be effective in preventing the observer expectancy effect. In studies with this design, neither the participants nor the researchers know which participants are in the experimental group or which are in the control group.
Detailed explanation-4: -Medication Experiments A double-blind experiment is beneficial when testing a specific medication. Half of the participants are given the medication, and the remaining participants are given a placebo. A placebo is an inactive substance such as a sugar pill that looks identical to the medication.