An Instrument Is Developed with the Intent to Measure Whether

Multiple Choice

An instrument is developed with the intent to measure whether the parenting skills of parents referred for child abuse or neglect improve after participation in a parenting education treatment program. The instrument is found to be valid when untreated parents referred for child abuse or neglect score much worse on it than model parents who are child therapists. Which of the following statements is/are true about the instrument?​

A) ​It appears to have known-groups validity.
B) ​Because it is valid, it can be relied upon to detect whether small, subtle improvements occur in the parenting skills of the parents who participate in the program.
C) ​It appears to have predictive validity.
D) ​It is sensitive to small differences.
E) ​None of the above is true.