You Conduct a One-Group Before-After Design Evaluation of a Program

Multiple Choice

You conduct a one-group before-after design evaluation of a program that aims to reduce juvenile delinquency. You discover that, in the year following the program juveniles were taken down to the police station for getting into trouble less often than the year before they enrolled in the program. While this is promising, what is a substantial potential threat to internal validity here?

A) Time order of variables
B) Demoralization
C) Statistical conclusion validity
D) Maturation