PSYCH100 Lecture Notes Lecture #3-4

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Department
Psychology
Course
PSYCH 100
Professor
Jeff Love
Semester
Fall

Description
Psych 100 Lecture Notes Fall 2012Experimental DesignExample of Experimental Design LeadershipStereotypingExperimental Designan investigator manipulates one or more factors independent variables to observe their effect on same behavior or mental process the dependent variable by a random assignment of participants the experiment controls other relevant factors looking towards causal relationshipindependent variablemanipulated by researcherdependent variablewhats measured thought to respond to change in independent variablecontrol groupstreated same as experimental group without manipulation allows for comparison example sham surgeries in rodentsDesign BiasesEffectsExperimenter effectwhen the researchers expectations significantly influence the outcome of the experiment example case of mazebright ratsthe experiments were influenced by what the experimenters thought was trueResearch Participator Biaswhen the participant changes their behavior based on their expectations of the study example The Hawthorne Effectworkers thought they were being observed so they changed their behaviorPlacebo effect I will pleaseany effect on behavior is caused by administration of an inert substance or condition which is assumed to be an active agentexam
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