Objective:
1. To investigate the psycho-social characteristics of male juvenile offenders, and understand their risk factors of violent and non-violent crime.
2. To understand the genetic features in male juvenile offenders, especially the gene polymorphisms of serotonin system including TPH1A218C, TPH2G-703T, HTR1B G861C, BDNF Va166Met, NOS1ex1f-VNTR gene polymorphisms.
Methods:
1. There were three hundred and eighty-four male juvenile offenders (include257violent offenders,127non-violent o...