Research Methods 1. Experiments Only method that proves on thing causes another Lab: carried out under experimental conditions Advantage: easier to control the variables. Disadvantage: Not ecologically valid Field: A real life situation Advantage: More ecologically valid Disadvantage: Hard to control the variables Experimental hypothesis: a prediction of what will cause something to happen Independent variable: what the researcher manipulates (noise) Dependent variable: the outcome of manipulation (concentration) Controlled Condition: not exposed to independent variable Experimental Condition: exposed to independent variable Repeated Measures Design: experimental design in which same participants used in each condition Independent Measures Design: experimental design which has different participants in each group Extravaneous Variables: variables other than IV & DV that affect the dependent variable Matched Pairs Design: pairing participants according to their similarities in characteristics Eye witness testimony ⇒ Lab......

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