Uc davis - psc 041 - class notes

UC Davis - PSC 041 - Class Notes
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Unformatted text preview: HW: DO THAT SILLY HYPOTHESIS SHIT.write a simple hypothesisshell show us how to do a comparison using excel laterdont worry about learning how to do it on your own DUE THURSDAY 10/12/06 10/10/2006 The scientific method-Theory identify general rules of how things in the world works o explains why something happens o organize o predict-Broad-Relevant Theory Hypothesis Study Statistical Analysis Replicate-Hypothesis o Testable prediction-Specifics need to be specific to test things-Falsifiable has to be open to be proven wrong-Null hypothesis this kind of hypothesis is BAD o Predicting no relationships o Cannot be proven o Only reject-Study o Test of hypothesis-Naturalistic observation Hawthorne Effectthe very presence of observation will chance the dynamic of how the subject interacts.usually high external validity-Laboratory low validity environment, but can manipulate the environment-Questionnaire-Statistical Analysis o Quantitative data o Interpreting results-Is hypothesis supported? Correlations-How are two variables related?-Correlation o statistical measure of relatedness Positive correlation variables increase or decrease together / - up slope Negative correlation one variables go up, the others goes down. \ -down slope Correlation coefficient-numeric measure of how well points fit line-rage -1 to 1 Coefficient of determination-strength of correlation Correlation DOES NOT imply causation-direction of relationships unknown Experimental studies-experiment o manipulation effect-Banduras social learning experiment-Independent variable o What gets manipulated-dependent variable o what gets measured Independent variable dependent variable Experimental group Control Group Random assignment Read summaries for each chapter 1-5 Also do those silly labs, 10 questions based on and another 40 questions based on the textbook. Bring a scantron UCD 2000 Dont read over the notes, look at the stupid summaries or else youll never get it right because she doesnt use easy multiple choice. Measuring Behavior Reliability and Validity Creating operational Definitions What to measure-verbal behavior-overt action planned or purposeful expression-nonverbal behavior-physiology Measuring behavior-create environment-participants perform behavior-record behavior-qualitative (qualities of something) to quantitative-measurement error any inaccuracies in measurement Measurement Error Random-inconsistent variations-not due to construct-unrelated to hypotheses-random results due to chance Bias-systematic variations (find things that arent really there)-systematic-threaten validity-Reliability-stable, consistent scores-free of random error-Validity relies on reliability Environment Errors-Standardization o Standardization versus humanism Participant Errors-Random error o Large sample help stop the fluctuations-...
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