What is the difference between a natural experiment and a quasi experiment??????????/
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Natural experiment: the independent variable is not brought about by the researcher, so it's natural, and would have happened if researcher wasn't there. So for example, how someones gender (which is naturally occurring IV) affect 'whatever', the dependent variable.
What is quasi and how's it different? Or have I got them both wrong?
What is quasi and how's it different? Or have I got them both wrong?
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Quasi experiment is a more umbrella term for experiments that aren't completely controlled, so a natural experiment would come under this. But there are other forms of quasi experiments that aren't natural experiments.
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(Original post by ilovefruit)
Natural experiment: the independent variable is not brought about by the researcher, so it's natural, and would have happened if researcher wasn't there. So for example, how someones gender (which is naturally occurring IV) affect 'whatever', the dependent variable.
What is quasi and how's it different? Or have I got them both wrong?
Natural experiment: the independent variable is not brought about by the researcher, so it's natural, and would have happened if researcher wasn't there. So for example, how someones gender (which is naturally occurring IV) affect 'whatever', the dependent variable.
What is quasi and how's it different? Or have I got them both wrong?
An example is measuring white blood cell activity before people take exams (low stress condition) and then during exams (high stress) there's less white blood cell activity during exams so stress negatively affects the immune system.
Quasi is a type of experiment that compares people on an existing difference like age or gender and the effect on the DV is recorded. No one manipulates the variable, it simply exists. For example, comparing the anxiety levels between phobic and non--phobic patients, the IV of having a phobia would not have been brought about experimental manipulation.
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