9/24/12Research Methods in PsychFundamentals of Research- ReviewScience- Source of knowledgeo Common senseo Intuitiono Religion- Empirical TestScientific method in psychology- Describeo Descriptive research- Predicto Correlational research- Explaino Experimental research- Basic vs. appliedo Basic mechanisms (underlying principles) vs. implications and solutions for everyday lifeScientific process- Research problemo Narrow down to a testable/ falsifiable hypothesis Specific variables and the relationship among them- Deductive Reasoning: The hourglass visual image, start big, get smaller, then get big again when asking future questionso Problemo Theoryo Hypothesiso Data- Datao Variables Something that varies Variation can be observed (measured) or manipulatedo What do we measure? Psychological variables- Categorical- Quantitative How we measure?- Self-report- Behavioral- Psychophysiological- Neuropsychological How good are the measures?- Reliability- validityMeasurement- Conceptual variable measured variableo Operation - How good the measures are?o Conceptual variable = measured variable + erroro Reliable Random error Stable/ consistent- Over time- Across individuals- Across items Valid- A measure is valid if it doesn’t have much systematic erroro Converges with other measures measuring related
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