A researcher is conducting a study examining residents' attitudes toward police. During data collection, news emerges that many police officers were involved in corruption. This is an issue of ______.
A) testing
B) maturation
C) external event
D) subject attrition

Question

Quizplus · Accepted Answer

This is an issue of an external event because the news about police corruption is an unexpected occurrence outside of the study that could influence the participants' attitudes, thus affecting the study's outcomes.

A Researcher Is Conducting a Study Examining Residents' Attitudes Toward