PSYCH 303 Chapter Notes - Chapter 3: Type I And Type Ii Errors, Scatter Plot, Operational Definition
22 Jan 2018
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Psychology 303: three claims, four validities: interrogation tools for consumers of research. Journalists who write about psychological science should simply report what researchers did and why it is important, but sometimes they end up misinterpreting or overstating the findings. Variables are the core unit of psychological research: sometimes that varies so it must have at least two levels or values. Constants are something that could potentially vary, but only has one level in the study in question. Frequency claims: describe a particular rate or degree of a single variable, (cid:862)ho(cid:449) f(cid:396)e(cid:395)uent(cid:863, variables are always measured, not manipulated, usually gathered via survey, questionnaire, interview. Making predictions based on research: some association allows us to make predictions (using positive or negative associations) that will usually be off by a certain margin, the stronger the association, the more accurate the predictions. Not all claims are based on research: not always systematic or broadly applicable, not frequency, association, or causal.
