Dr Yates Forms the Hypothesis That Students Who Sleep More

question 45

Multiple Choice

Dr. Yates forms the hypothesis that students who sleep more prior to taking an exam will score higher on the exam than students who sleep less. Half of the students sleep eight to nine hours the night before the exam. The other half sleep only four to five hours the night before the test. She then gives the participants an exam. In this experiment, what is the dependent variable?

• A) The group that sleeps eight to nine hours
• B) The performance on the exam
• C) The group that sleeps four to five hours
• D) Whether they slept four to five or eight or nine hours

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Definitions:

Electroencephalography

A diagnostic method that records the electrical activity of the brain to identify abnormalities.

Myelinated

Refers to nerve fibers that are covered with a fatty substance called myelin, which increases the speed at which electrical signals (nerve impulses) are passed along the nerve.

Peripheral Nervous System

The part of the nervous system that consists of the nerves and ganglia outside of the brain and spinal cord.

Unmyelinated

Describing nerve fibers that lack a myelin sheath, affecting the speed and manner in which nerve impulses are conducted.