SB 477 amends OCGA 17-4-20.1 to change the term "primary" aggressor to "predominant" aggressor in cases involving family violence. The bill also provides that an officer conducting a family violence investigation involving two or more parties shall not threaten, suggest, or indicate that all parties will be arrested. The legislation also adds "threats that create the fear of physical injury" to the criteria that may be considered when an officer is determining which party is the predominant aggressor.