Beryl Is Conducting an Observational Study and Has Trained Two

question 6

Multiple Choice

Beryl is conducting an observational study and has trained two raters to use the rating instrument.Both of the raters drop out just after the study has begun,so Beryl has to substitute in less well-trained raters.Beryl has increased the risk of ____.

• A)low reliability of the measure
• B)low strength of the intervention
• C)poor reliability of treatment implementation
• D)random irrelevancies in the setting

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Definitions:

Multiple Sclerosis

An autoimmune disease affecting the central nervous system, leading to impaired mobility and cognition.

Myelin

A fatty substance that surrounds nerve fibers, increasing the speed at which electrical impulses travel along the nerve cells.

Axons

Long, threadlike parts of nerve cells along which impulses are conducted from the cell body to other cells.

Propagating Action Potential

The process by which an electrical impulse travels along the length of a neuron, enabling communication within the nervous system.