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Explain the Difference Between Internal Validity and External Validity in Experimental

question 119

Essay

Explain the difference between internal validity and external validity in experimental research.Why must experimenters usually make a "trade-off" between internal and external validity?


Definitions:

Numeric Age

Geologic age of a rock, sediment, fossil, or event calculated in thousands, millions, or billions of years before present; synonym: absolute age.

Actual Age

The precise age or date of an object or event, usually determined through radiometric dating or other scientific methods.

Changed

Altered or modified from an original state or condition.

Time Required

The duration needed to complete a process or reach a specific outcome.

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