PSYC 2017 Chapter : Psych 2017 Test 2
Document Summary
Variable any characteristic of an organism, environment, or experimental situation. Operational definition def of an abstract concept that allows measurement or. Ex: intelligence measured by iq test, gpa, accuracy of problem solving task manipulation of the concept in a research study. Dv the behavioral variable designed to measure the effect of the variation of the iv. Sensitive to or able to pick up the influence exerted by the iv. Qualitative vs quantitative (nationality vs # of kids, mood vs reaction time) Nominal a categorical variable for mutual exclusive, but not ordered, categories. Ordinal order matters but not the difference between values. Interval the difference between two values is meaningful. Ratio has all the properties of an interval variable & also has a clear definition of. Hard with ivs that represent abstract constructs or are unethical to manipulate operations. Operationalization constructs are used for: research participants, iv, dv, experimental setting assess with: test-retest, equivalent forms.
