Any factor that leads to differences between the groups at the start of the study is termed a(n)____ threat.
A)selection
B)intervention
C)instrumentation
D)regression

Question

Quizplus · Accepted Answer

Selection threat refers to any factor that leads to differences between groups at the start of the study, whereas intervention, instrumentation, and regression refer to specific factors that affect the validity and reliability of the study in different ways.

Any Factor That Leads to Differences Between the Groups at the Start