(also called Motivation).— The reason for the judgment that one makes. This can include evidence, the testimony of witnesses, social pressure, emotional dispositions, etc. 

Sufficient Motive.— A motive that justifies a judgment either because it is a matter of evidence or the reliability of witnesses. 

Insufficient Motive.— A motive that does not justify a judgment because it is a matter of something besides evidence or the reliability of witnesses. E.g., social pressure.