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

Question

jason chang · Accepted Answer

Final Answer : C, Explanation :  The authors propose that the effectiveness of a program directed toward the prevention of behavior problems in youth should be demonstrated by at least two well-designed experimental trials or three well-designed interrupted time series experiments. While option D includes additional study types, it is not necessary to exceed the minimum requirements proposed by the authors. Option A specifies a higher number of experimental trials than necessary, and option B only includes one type of study design.

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