What Are Three Types of Variables in a Controlled Experiment

Different participants are used in each condition of the independent variable. When an extraneous variable cannot be controlled for in an experiment it is known as a confounding variable.

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Experimental design refers to how participants are allocated to the different conditions or IV levels in an experiment.

. Experimenters usually try to identify and control for these variables. There are three types. These are variables that might affect the relationships between the independent variable and the dependent variable.

The same participants take part in each condition of the independent. Independent measures between-groups.

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