Which Threat to Internal Validity Is Associated with Extreme Scores

question 39

Multiple Choice

Which threat to internal validity is associated with extreme scores in repeated measurements?

• A) Statistical regression
• B) Differential subject selection
• C) Experimental mortality
• D) Local history

---

Definitions:

Depolarization

Depolarization is a process in nerve cells where the cell membrane's normal negative charge is reduced, allowing an action potential to occur and leading to the propagation of nerve signals.

Electrical Charge

A fundamental property of matter that leads to electromagnetic interactions, described in terms of positive or negative electrical energy.

Nodes of Ranvier

Gaps in the myelin sheath of nerve fibers, which play a critical role in the fast propagation of nerve impulses.

Myelinated Axon

A nerve fiber enveloped in a myelin sheath, which increases the speed and efficiency of electrical signal transmission.