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6 Cards in this Set
- Front
- Back
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Laboratory Experiments - Definition + 3 types |
An experiment that takes place in a controlled environment - where cause and effect can be investigated. Control over as many variables as possible
Lab, Field, Quasi |
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Field Experiment - Definition |
An experiment that is performed in a more everyday / natural (uncontrolled) environment of those being studied |
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Quasi-Experiment - Definition |
Not classed as a 'true experiment'. Where the IV is naturally occurring and not directly manipulated by the researcher. |
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Laboratory Experiment Strengths & Weaknessesggg |
+ High control over variables & environment : cause and effect more easily determined as extraneous variables more controlled - ⬆️Validity + High Control also means it can be easily replicated as the procedure is standardised - ⬆️ External Reliability -> ⬆️ Validity - Artificial Environment : ⬇️Validity bc- = Low ecological validity = Low mundane Realism = Higher Demand Characteristics - Experimenter Bias |
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Field Experiment Strengths & Weaknesses |
+ Higher Ecological Validity - due to less artificial environment - Validity ⬆️ + Lower Demand Characteristics - as pps in natural environment - especially when pps don't know they're being studied + Low Experimenter Bias - as can't control variables as much - harder to exert influence - Low control over IV and extraneous variables - cause and effect less easily determined - ⬇️Validity - Not easily replicated - as conditions are unlikely to be same again - ⬇️External Reliability ⬇️Validity - Sample bias - Opportunity Sampling often used - pps not randomly allocated to conditions - Time consuming and expensive |
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Quasi-Experiment Strengths & Weaknesses |
+ + - - |
