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8 Cards in this Set
- Front
- Back
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Define Extraneous Variable? |
Anything else that may affect the dependant variable and give an unreliable results |
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List the extraneous variables |
Investigator Affects- Expectations and body language. Double blind procedures and standardise instructions Situation Variables- Time of day/ setting Control enviorment Partcipant Variables- Individual Differences Randomise the groups Demand Characterstics- the way people think they are supposed to behave , single blind procedure , or decieve them (unethical) Order Effects- the order in which tasks happen in. Counter balancing |
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Describe a field experiment? |
Out in everyday social situations ADV- Greater ecological validty ( more accurate behaviour) No Demand Characterstics Dis- Little Control Hard to reproduce Ethical Issues fully informed consent EXAMPLES-> Behaviour on a train with one man holding a bottle of alcohol and one with a walking stick. unethical |
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Describe the Repeated Measures Design? |
SAME group, SAME task, DIFFERENT conditions. No individual differences Less participants needed
Order effects Demand Characteristics |
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Describe the experimental Design? |
2 groups, 2 different conditions, same test No order affcets Less chance of guessing aims
Individual Differences Twice as many participants needed |
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Describe Matched Pairs Design? |
Two seperate groups,one condition , matched for characterstics.
Reduces individual differences
Time consuming
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Give an example of a Experimental Design? |
Matched pairs, Repeated Measures, Experimental Design. |
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Give an example of a research method? |
Natural, Field, Lab, |
