Threats to internal validity include ?

Question

A.
mortality threat and maturation threat.

B.
regression threat and mortality threat.

C.
testing threat and history threat.

D.
bias threat and prejudice threat.

Answer 1

The correct answer is:

A. mortality threat and maturation threat.

These are both recognized threats to internal validity in research studies. Mortality threat refers to the loss of participants over time, which can bias the results, while maturation threat refers to changes in participants that occur naturally over time, which can also affect the study's outcomes.