Hsu Fu-sheng, a professor at Central Police University and chair of the Tosun Foundation, points out that if young people repeatedly break the law, they are likely to become habitual offenders, and the task of rehabilitating and treating them will become very difficult. Hsu's research into the criminal history of Chen Chin-hsing, the ringleader in the shocking Pai Hsiao-yen case, is clear evidence of this fact.
中央警大教授、同時也擔任「向陽公益基金會」執行長的許福生指出，青少年若屢次再犯，便極易養成習慣，矯正和治療的工作也最困難，他研究多年前震驚社會的白曉燕案主謀陳進興的犯罪歷程，就是最好的例證。