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9 Cards in this Set
- Front
- Back
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lab experiments |
-controlled artificial environment -experimenter manipulates IV -experimenter measures DV -attempts to minimise EV -uses standardised procedures |
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advantages of lab experiments |
-high internal validity, IV manipulated + EV minimised so likely that IV is responsible for changes in DV, can establish cause and effect -high reliability, procedures are standardised so experiment can be replicated |
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disadvantages of lab experiments |
-low ecological validity + mundane realism, setting is artificial so doesn’t represent real life, pps asked to do tasks they would not do in real life, can’t generalise results to real life -demand characteristics, pps aware they are taking part in an experiment so mast change their behaviour to meet expectations, behaviour is unnatural + doesn’t reflect their true behaviour |
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field experiments |
-conducted in natural real world environments -experimenter manipulates IV -experimenter measures DV -minimal control of EV -confederate actors used |
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advantages of field experiments |
-high ecological validity + mundane realism,conducted in natural environments + given everyday tasks, can be generalised to real life -demand characteristics unlikely, pps unaware they are in experiment so won’t change their behaviour to fit aim, means pps behaviour will be natural + reflect true behaviour |
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disadvantages of field experiments |
-low internal validity, hard to control EVs so can’t say if IV is responsible for change in DV, can’t establish cause + effect -low reliability, conditions in field experiments are natural + hard to standardise, means other researchers can’t replicate same field experiment |
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natural + quasi experiments |
-can be conducted in any setting -measures DV -no control over EV -IV not manipulated so is naturally occurring |
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advantages of natural + quasi experiments |
-can be used to study sensitive research questions, allow investigations of variables that would be harmful to manipulate, means it’s ethical -high ecological validity/mundane realism, if conducted in natural environments or given everyday tasks, behaviour is natural + can be generalised to real life |
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disadvantages of natural + quasi experiments |
-low internal validity, IV bid manipulated + minimal control over EV, hard to establish cause + effect -low reliability, IV is naturally occurring + may be a one off event, procedures may not be standardised, means other researchers can’t replicate experiment |
