Answer:
A presentence investigation report (PSIR) is a legal term referring to the investigation into the "legal and social background" of a person convicted of a crime before sentencing to determine if there are extenuating circumstances which should lighten the person's sentence or a history of criminal behavior which should increase the severity of the person's sentence.[1] The PSIR is a "critical"[1] document prepared by a probation officer who uses a system of allocating points[1] to fulfill a number of purposes, including serving as a charging document and exhibit proving criminal conduct. It is said to be akin to a magistrate judge's report and recommendation.[2] In hindsight, PSIR is a system that is still widely recognized today in order to give someone a harsher or lesser sentence.[3]