For 18-year-olds, how should choices be made between using the YSR and CBCL/6-18 vs. the ASR and ABCL?

Answer: For 18-year-olds who live with their parents and attend high school, the YSR and CBCL/6- 18 would usually be preferable. For 18-year-olds who do not live with their parents or do so only during vacations from college or the military, the ASR and ABCL would usually be preferable. The ASR and ABCL would also be preferable if the 18-year-olds are to be reassessed at later ages.