Aresearcher finds that the more hours partied per week, the lower a student's gpa. she questions whether there may be other issues affecting gpa that were not taken into account, such as hours studied, whether the student is attending classes, or whether the student is working as well. what are these additional issues called?

The correct answer would be, Third Variable Problem.

Explanation:

Third variable problem can be defined as the supporting events that may cause the primary event to occur but are not specifically the cause of occurring the primary event.

In this question, A researcher's finding is that if a student parties more hour, his GPA is likely to be affected more.

Other variables like hours studied, whether the student attended the classes, or whether the student is working as well, are all third variable problems.