Textbook Notes (368,781)
United States (206,101)
Psychology (136)
PSY 3221 (5)
Chapter

Critical Thinking 3

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Department
Psychology
Course
PSY 3221
Professor
Jeremy Tyler
Semester
Fall

Description
Critical Thinking Chapter 3IVariablesaMeasured and manipulated variablesiMeasured variableone whose levels are simply observed and recordediiManipulated variablea variable a researcher controls usually by assigning participants to the different levels of that variableiiiSome variables can only be measured genderivOther variables cant be manipulated because it would be unethical to do sobFrom conceptual variable to operational definitioniConceptual variablesabstract concepts Must be carefully defined at the theoretical leveliiWhen testing their hypotheses with empirical research they create operational definitionsiiiOperationalizemeans to turn a concept of interest into a measured or manipulated variableII3 ClaimsaClaimthe argument someone is trying to makebFrequency claimdescribe a particular rate or degree of a single variable iEx 1 in 25 US teens attempts suicideiiThe best way to distinguish frequency claims from the other 2 claims is that they focus on only one variable
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