Libby's Physician Refers Her to a Medical Center in Order

question 137

Multiple Choice

Libby's physician refers her to a medical center in order to have the biochemical activity in her brain analyzed. She is given an injection of a radioactive substance and then is told to lie down with her head in a scanner. The technique being used is __________

• A) positron-emission tomography.
• B) functional magnetic resonance imaging.
• C) microelectrode recording.
• D) an electroencephalogram.

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Definitions:

Measurement Errors

Discrepancies between the observed values and the true values, which can arise from various sources in data collection.

Reliable

Reliable refers to the consistency of a measure or process over time. In research, it means that the results of a study or the performance of an instrument are consistent and can be replicated under similar conditions.

Test-Retest

A method of measuring the reliability of a test by administering the same test to the same subjects at two points in time and comparing the results.

Internal Consistency

A measure of the reliability of a test or scale, indicating how closely related a set of items are as a group.