A Researcher Plans to Conduct an Experiment to Test Whether

question 260

Multiple Choice

A researcher plans to conduct an experiment to test whether a cup of hot milk at night helps people fall asleep faster than usual. In this study, the independent variable is:

• A) the amount of time it takes participants to fall asleep.
• B) the consumption of hot milk at bedtime.
• C) the number of participants drinking hot milk at bedtime.
• D) the number of hours each participant sleeps for.

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Definitions:

Spinal Tap

A medical procedure involving the extraction of cerebrospinal fluid from the spinal canal for diagnostic or treatment purposes.

Cerebrospinal Fluid

A clear, colorless body fluid found in the brain and spinal cord, which acts as a cushion protecting the central nervous system.

Subarachnoid Space

The subarachnoid space is a cavity filled with cerebrospinal fluid (CSF) located between the arachnoid membrane and the pia mater surrounding the brain and spinal cord, serving as a cushioning layer.

Spinal Cord

A long, thin, tubular bundle of nervous tissue and support cells that extends from the brain, conducting sensory and motor nerve impulses to and from the brain to the body.