Biglan,Mrazek,Carnine,and Flay (2003)have Proposed That Before Scientific Organizations Advise the Adoption

Biglan,Mrazek,Carnine,and Flay (2003) have proposed that before scientific organizations advise the adoption of a program directed toward the prevention of behavior problems in youth,the effectiveness of the program should be demonstrated by

A) no less than four well-designed experimental trials
B) at least two well-designed experimental trials
C) at least two well-designed experimental trials or three well-designed interrupted time series experiments
D) at least two well-designed experimental trials, three well-designed interrupted time series experiments, or five or more cross-lag correlational studies