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10 Cards in this Set
- Front
- Back
3 Experimental Methods?
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Laboratory
Field Natural |
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4 non experimental methods
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Correlational
Questionnaire Interviews observational |
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Advantages of Experimental methods
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Lab- You can control the variables (know for sure IV has caused the effect on the DV) everything is standardised means anyone can replicate the experiment
Field- happens in natural ebvironment which increases ecological validty, and still have control of variables- less chance of extraneous variables damaging the exp. such as demand chrac. Natural- has 100% ecological validity. and little bias from from sampling/ demand characteristics |
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Disadvantages of experimental methods
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Lab- has very low ecological validity, because its in an artifical environment has trouble from bias and demand characteristics and experimentor expenctancy, ethics... misleading ppt
Field- less control of variables and can be subject to extraneous variables, ethics- consent, deception and invasion of privacy, difficult to replicate Natural- No control of variables and prone to extraneous variables, Ethics- decpetion etc, can NOT be replicated |
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What is the IV?
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The independant variable- is manipulated by the experimenter
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What is the DV?
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this is the dependent variable- whats being measured to see if it changes as a result of the IV
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difference between confounding/ extraneous variables?
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Confounding variables if not controlled become extraneous
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what is correlation?
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where you clock data on a scattergram to measure the relationship between co-variables
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whats the difference between positive and negative correlations?
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positive is when both scores go in the same direction
negative is when they go in opposite directions |
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Advantages/ disadvantages of corelations
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Advantages- you can look for relationships in data that you can test through an experiment,
disadvantages- no ddefinate cause/ effect |