The Existence of Psychological Results in the Proof of the Criminal Action of Murder

The purpose of this study is to explain the existence of psychological results in proving the crime of murder. This is important because in order to seek material truth in a criminal case, in addition to using the evidence specified in the law, a judge's conviction is required. This research is normative legal research, namely law is conceptualized as norms, rules, principles or dogmas. So that what is studied is the compatibility between legal principles and existing norms. The main data in this research is secondary data in the form of primary, secondary and tertiary legal materials. The results of the research show that the criminal justice process requires information from witnesses, victims and suspects. In the concept of psychology, the witness' memory is very vulnerable to the events he experienced, causing information to become inaccurate. In this case, the power of psychological results is very significant in criminal cases to help provide input that will add to the judge's conviction whether it is the perpetrator who committed or did not commit the criminal act or is related to accountability (mens rea).