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Psychology 1101Chapter2

Psychology 1101Chapter2 - Psychology 1101 Chapter 2-The...

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Psychology 1101 Chapter 2-The Research enterprise in Psychology Page 40 Psychologists and other scientists share three sets of interrelated goals:measurement and description,understanding and prediction,and application and control. Predictions hypotheses Variables—measurable conditions that can be controlled or observed in a study Page 41 Theory—used to explain observations A scientific theory must be testable Steps in scientific investigation (Step 1)Formulate a testable hypothesis Page 42 To be testable,scientific hypotheses must be formulated precisely,and the variables under study must be clearly defined. Operational definition:actions used to measure or control a variable (Step 2) Select the Research method and design the study Page 43 Participants—subjects whose behavior is being studied or observed (Step 3) Collect Data—techniques used include:direct observation,interviews and questionnaires Advantage of survey method:info is collected quickly and easily
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(Step 4) Analyze the Data and Draw Conclusions-researchers use statistics to analyze data (Step 5) Report the Findings Page 44 Two major advantages of scientific approach(clarity and precision;relative intolerance of error) Page 45 Research methods-general strategies for conducting studies Purpose of experiement:find out if one variable causes change in another Page 46 Independent variable-variable that is manipulated Dependent variable-depends on the independent variable Experimental group-receives attention Control group-nothing is done to this group;untampered with Page 47
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