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5
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the factor in a study that changes or varies as a result of changes in the independent variable
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7
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a study during which neither participants nor researchers know to which group any subject belongs
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8
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a group that truly reflects a selected characteristic of a larger population
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9
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the factor that the experimenter manipulates or changes in a study
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10
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the group that does not participate in the critical part of the experiment
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11
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a method of research that looks at different age groups at the same time in order to understand changes that occur during the life span
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12
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a 'medicine' that has no active ingredients and works by the power of suggestion
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13
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objective methods for observation and measurement of subjects in various areas, such as intelligence
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15
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the group on which the critical part of the experiment is performed
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16
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research that collects lengthy, detailed information about a person's background, usually for psychological treatment
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20
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a method of research that studies the same group of people over an extended period of time
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