Non fatal suicidal behavior is also associated with a great deal of suffering and risk. Although suicidal behavior has been extensively studied, major problems still remain to be solved. Among them are those of definition of different subtypes and phenotypes of suicidal behaviors, and associated factors (such as aggression, impulsivity, suicide intent). The future probably lies in looking at some basic underlying biological phenotypes such those described in the work of Mann and Currier, (2009)50 or some of the sociological problem behavior theories of Jessor (2005).118