The scores are used to predict risk for criminal re-offence and probability of rehabilitation. In addition to lifestyle and criminal behavior the checklist assesses glib and superficial charm, grandiosity, need for stimulation, pathological lying, conning and manipulating, lack of remorse, callousness, poor behavioral controls, impulsivity, irresponsibility, failure to accept responsibility for one's own actions and so forth. A value of 0 is assigned if the item does not apply, 1 if it applies somewhat, and 2 if it fully applies. Each of the items in the PCL-R is scored on a three-point scale according to specific criteria through file information and a semi-structured interview. The PCL-R is a clinical rating scale (rated by a psychologist or other professional) of 20 items. 4 Diagnostic criteria and PCL-R assessment.2 Hare's Checklist and other mental disorders.