What does the threat to internal(maturation) validity refer to?
A. Events happening in the community that will change the behavior of the program participants. B. The improved skill of the program staff as they become more experienced. C. Predictable changes in people that can be expected solely due to the passage of time. D. The changing nature of an evolving program.
Maturation is the predictable change in people that can be expected based exclusively and solely on the passage of time. There are certain things that one can expect of a person as time passes. One can expect that a young child will learn how to use the toilet properly. One can also expect that a young teen will one day learn how to drive. These changes are needed and expected of people in society today.
Maturation often ensures a few changes that will help the person survive in a hostile community. Many signs of maturation are celebrated as milestones to be reached, since they are things that allow us to function without being ridiculed in society. That’s how things are.