Answer :
Although most research is done in the laboratory setting, eventually we would want to know that laboratory results are applicable in a real world setting. This is an issue of Ecological validity.
Real world setting in research is to find out how much would the experimental results are applicable in the real world.
Ecological validity is examines whether the experimental results can be generalized in the real world setting.
For example, in a simulator related assessment for driving, the participants who are driving using actual steering wheel will be ecologically valid as compared to the participants driving using mouse and cursor.
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