Science of Psychology 2

Science of Psychology 2 - The Science of Psychology Part 2...

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Click to edit Master subtitle style The Science of Psychology Part 2: Flaws, Biases, and Ethics
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A Good Measure: Reliability and Validity l Reliability = consistency or repeatability of a measure l Validity = the accuracy or correctness of a psychological statement
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Unreliable and Invalid TEST Construct (i.e., “intelligence) Scores on test
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Reliable but Invalid TEST Construct (i.e., “intelligence) Scores on test
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Reliable AND Valid TEST Construct (i.e., “intelligence) Scores on test
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Validity Continued l Internal = confidence in our IV manipulations l External = confidence in generalizability (real world) l Construct = confidence in our operational definitions
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Evaluating Research: Methodological Pitfalls l Sampling bias = non-representative sample l Control = random sampling l Placebo effects = expectations influence experiences l Control = “blind” study
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l Distortions in self-report data: l Social desirability bias l Response set l Experimenter bias l the double-blind solution Evaluating Research: Methodological Pitfalls
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This note was uploaded on 04/17/2008 for the course PSY 101 taught by Professor Jaggard during the Fall '07 term at Indiana State University .

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Science of Psychology 2 - The Science of Psychology Part 2...

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