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An Experimenter Finds That When a Person Takes Part in a Study

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An experimenter finds that when a person takes part in a study they become quite nervous, when normally they are confident and assertive.This threatens the internal and external validity of their findings and is an example of what phenomenon?


Definitions:

Liters

A metric unit of volume equal to one cubic decimeter, commonly used to measure fluids.

Significant Figures

The digits in a numerical value that contribute to its measurement accuracy, including all certain digits and the first uncertain digit.

Significant Figures

The number of digits in a number that are considered to contribute to the accuracy of that number, reflecting the precision of a measurement.

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