PSC 41 Lecture Notes - Lecture 3: Operational Definition, Bar Chart, Scatter Plot
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PSC 41 Full Course Notes
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Actions, performance, archives (ex: measuring height, observing fidgeting) Must precisely communicate exactly how the variable was measured. Ex: inches (for height), pounds (for weight), years (for age) # of times a partner says ily during a day . Stress when preparing for a job interview ??? (can"t really be described) The amount of sweat exhibited during prep for the interview . Not really ideal, but they are concrete/measurable. Variable = any characteristic or quality that varies (different); something that we measure or manipulate. Operational definition = defining the variable by the means used to measure it. In psychology, what could be an operational definition for . Some variables are measured as categories (categorical) Some variables are measured on a continuous scale meaning. Predictors vs. outcomes: causal claim: change in x causes a change in y. Categories have different levels which vary in quality or kind. For causal claims, there is a clear predictor and outcome.
