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3 Cards in this Set
- Front
- Back
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What are the types of experiment? Define: |
Lab= Takes place in a controlled environment in which the researchermanipulates the IV to see the effect on the DV whilst controlling extraneousvariables. Field= Takes place in a natural setting within theresearcher manipulates the IV and records the effect on the DV. Natural= Change in the IV brought about by researcher but wouldn’thave happened without the researcher being there and they record the effect onthe DV. Quasi= IV has not been determined but the variables alreadyexist (gender, age). |
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Give the positives and negatives of the types of experiment: |
Lab: +High control of extraneous variables meaning researcher cansee direct effect of IV on DV (no confounding variables) = High internalvalidity +Replication is possible to see if the experiment is valid -Lacks generalisability -Low external validity -Know they are in an experiment meaning they may actdifferently than normal= Demand Characteristics Field: +Produces behaviour which is likely to be more natural asthey are in a natural setting and as they may be unaware they are beingstudied. = High external validity -Loss of control of extraneous variables -Replication often not possible -Ethical issues as they cannot consent to being studiedwithout demand characteristics having a negative effect. Natural: +High external validity -Naturally event may only happen rarely reducing researcheropportunities. -Limited generalisability -Participants may not be randomly allocated in independent groupsdesign meaning researcher might be less sure that the IV effected the DV. Quasi: +Carried out under controlled lab experiments= High internalvalidity -Cannot randomly allocate participants to conditions leadingto problems with confounding variables. |
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What is an experiment? |
How the Independent variable changes and under what circumstances; this varies from one experiment to another. |
