(Scenario III) Scenario III states that only 24 of the initial 30 men completed the study. This is an example of _____ and is a potential threat to the study's _____ validity.
A) instrumentation; external
B) mortality; internal
C) attrition; external
D) maturation; internal

Question

Quizplus · Accepted Answer

Mortality, also known as attrition, refers to the loss of participants over the course of a study. This can threaten the internal validity of the study because it may introduce systematic differences between those who complete the study and those who do not, potentially affecting the study's outcomes.

(Scenario III) Scenario III States That Only 24 of the Initial