05 the probability of the results occurring by chance is low Internal vs

05 the probability of the results occurring by chance

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P<.05 , the probability of the results occurring by chance is low Internal vs. external validity Internal validity: how sure we are that the individual variables caused the effects obtained by the dependent variable Questions to ask: did the experiment have a control or comparison group Did the experiment prevent experimenter expectancy effects (how an experimenters expectance can have an influence on study; can be combatted with double blind study) External Validity: how sure are we that the findings obtained would generalize to other people and situations Questions to ask: does the sample rep the pop? Is the setting natural or engaging Mundane vs. psychological realism: Mundane realism: how much the setting of the study resembles the real world Psychological realism: how much the experimental setting and real and involving to the participant
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Studies sometimes use cover stories (confederates) to help ensure experimental realism Meta-analysis Statistical procedures for examining relevant research that has already been conducted or reviewed Quantitively combines results of individual studies to measure the overall reliability and strength of particular effects and is often more reliable than one single study
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  • Spring '07
  • pickett

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