An experiment in which the independent variable is manipulated by "nature," not by the experimenter,is known as a ________ experiment.
A)laboratory
B)field
C)population-based survey
D)natural

Question

Quizplus · Accepted Answer

A natural experiment is one in which the independent variable is naturally occurring and not manipulated by the experimenter. The experiment takes advantage of an existing variable, such as a policy change or natural disaster, to observe the effects on the dependent variable.

An Experiment in Which the Independent Variable Is Manipulated by "Nature