State law spells out many factors that judges weigh when determining what arrangement would be in the best interests of the child. Primary issues relevant to this decision are parental ability to meet a child's emotional, physical and developmental needs. The age of a child might influence how either parent is able to meet those requirements. The moral fitness of parents and their ability to maintain a consistent family routine within safe homes matter as well. Any evidence of domestic violence or child abuse and neglect naturally figures into a custody decision.