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Unformatted text preview: 2-3-11Chapter 6 – Conducting a Good Experiment I: Variables and ControlThe Nature of VariablesoVariablesoA variable is an event or behavior that can assume at least two values.Another word for value is levels/groups/conditionsoOperational definitionBridgman (1927) suggested that researchers should define their variables in terms of the operations needed to produce them.Such definitions allow others to replicate your researchIndependent VariablesoIndependent variables (IV’s)oPhysiological IVConditions that alters or change the biological state of the participantExamples: Drugs, temperature, sleep deprivation, etc.oExperienceManipulation of the amount or type of training or learningExamples: reinforcement vs punishment/oStimulus or environmental IVAn aspect of the environment that the experimenter manipulatesParticipant CharacteristicsoParticipant characteristics:oAspect of the participant, such as age, sex or personality traits, that are treated as if they are IV’s.treated as if they are IV’s....
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This note was uploaded on 04/05/2012 for the course PSY 3213 taught by Professor Staff during the Spring '11 term at FSU.
- Spring '11