Research Methods - Research Methods Agenda...

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Research  Methods Agenda: Scientific Methods Descriptive Research Correlational Research Experimental Research Ethics
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Science Aspect of Psychology The scientific  study of behavior and mental  processes. Why use science? Humans are hard to study! Complexity Variability Reactivity Therefore, behavior is complex variable We need a systematic  way to study it.
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Science Aspect of Psychology Why does intuition and ‘common sense’ prevail? Hindsight bias: Tendency to believe, after learning an  outcome, that we could have foreseen it Overconfidence:  We tend to think we know more than  we do.           WREAT             WATER           ETRYN              ENTRY           GRABE              BARGE (Goranson, 1978 )
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Scientific Method Usually starts with a Theory Parsimonious Organize and link observed facts Offers testable predictions Time to test the theory! Hypothesis Testable Falsifiable Collect Data Descriptive  Correlational Experimental Use evidence to modify theory
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Measurement Methods Operational definition:  description of a property in  concrete, measureable terms Reliability :  tendency for measure to produce same  measurement whenever it is used to measure same  thing. Validity :  extent to which a measure and a property  are related.
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Descriptive Research Methods Provides a description  of behavior. Naturalistic observation  – gathering scientific  information by unobtrusively observing people in natural  environments. EX:  Jane Goodall, Zimbardo’s cars Case studies  – intensive examination of a particular  phenomenon Used especially for brain injuries/abnormalities EX: Phineas Gage, Genie
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Correlational Research Methods Determines the degree to which two or more variables  are related The Question:  Does the value of one variable  systematically change with changes in the value of a  second variable?
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  • Spring '08
  • McDonald
  • Psychology, Randomness, Thing, Correlational Research

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