Researchers Using PET Scans to Study the Opioid System in Long-Distance

question 358

Multiple Choice

Researchers using PET scans to study the opioid system in long-distance runners are likely to find increased brain levels of _____ following a long run.

• A) acetylcholine
• B) endorphins
• C) GABA
• D) cerebrospinal fluid

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Definitions:

Standard Deviations

A measure of the amount of variation or dispersion of a set of values relative to the mean.

Null Hypothesis

A hypothesis that suggests there is no statistical significance in the expected outcome of a study.

Research Hypothesis

A specific, testable prediction about what you expect to happen in your study.

Hiring Preferences

The inclinations or biases employers have towards certain characteristics, qualifications, or traits of applicants when making hiring decisions.