Lecture 2

Lecture 2 - Lecture 2: Research Methods Clever Hans Lessons...

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1 Lecture 2: Research Methods Clever Hans Lessons from Clever Hans Expectancy effects Observer Participant (Demand characteristics) Can occur unconsciously Skepticism Try to disprove theories Controlled observations Psychology is a Science Research Scientific process involving systematic collection and analysis of data Empiricism Belief that acquiring accurate knowledge of the world requires observation of objects and events
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2 Research Goals in Psychology Description What is the behavior? Prediction When does the behavior occur? Control What causes the behavior Explanation Why does the behavior occur? The Scientific Method Prediction based on theory and experience Where and how will the data be collected? And revise theory, if necessary Statistics Test of the hypothesis Good scientific theories: Generate hypotheses Empirical Objective measurements Falsifiable VS. Only one of these could be proven wrong. Data Concepts Data Objective observations and measurements Variables Anything that can vary in the world Manipulated or measured in research Operational definition Description of a property in concrete measurable terms
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3 Research Strategy 3 Dimensions Study Design What? Research Setting Where? Data-collection methods How? Study Design Experiment Correlational Study Descriptive Study Experiment Only design that identifies cause-effect relationships How? Manipulate 1 variable Hold all other variables constant Changes in outcome must be due to the manipulation Experiment Example: How can I help my students learn? Theory: Supplemental study materials improve learning. Falsifiable Hypothesis: PSC1 students given extra study materials will learn more. Cause-effect question
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4 Operational Definition Description of a property in concrete measurable terms How will we measure the amount a student has learned? Numerical quarter grades
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Lecture 2 - Lecture 2: Research Methods Clever Hans Lessons...

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