Random Assignment Controls ________ Extraneous Variables

question 107

Multiple Choice

Random assignment controls ________ extraneous variables.

• A) known
• B) unknown
• C) correlated-groups
• D) ex post facto

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Definitions:

Gastrocolic Reflexes

Reflexes that mediate the increase in motility of the colon in response to food entering the stomach.

Sympathetic Nerve Fibers

Nerves that are part of the sympathetic nervous system, involved in the body's fight-or-flight response by increasing heart rate and blood pressure among other effects.

Segmental Contractions

Rhythmic contractions of the intestines that mix and propel contents in the digestive system.

Sloughed-Off Epithelial Cells

Cells that have been shed from the epithelium, the layer of cells covering the body surfaces and cavities.