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| a measure of the relationship between two variables |
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| a number derived from the formula for measuring a correlation and indicating the strength and direction of a correlation. |
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| a deliberate manipulation of a variable to see if corresponding changes in behavior result, allowing the determination of cause- and-effect relationships |
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| def of a variable of interest that allows it to be directly measured. |
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| Variable in an experiment that is manipulated by the experimenter |
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| Variable in an experiment that represents the measurable response or behavior of the subjects in the experiment |
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| subjects in an experiment who are subjected to the independent variable. |
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| subjects in an experiment who are not subjected to the independent variable and who may recieve a placebo treatment. |
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| process of assignment subjects to the experimental or control groups randomly, so tht each subject has an equal chance of being in either group. |
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| the phenomenon in which the expectations of the participants in a study influence their behavior. |
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| tendency of the experimenter's expectations for a study to unintentionally influence the results of the study |
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| study in which the subjects don't know if they are in the experimental or the control group |
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| study in which neither the experimenter nor the subjects know if they are in the experimental or control group |
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