1) Investigating child abuse requires identifying warning signs in a child's behavior and asking questions if something seems off. Child abuse includes physical, emotional, sexual, and neglect. 2) Technology has advanced investigation methods, but the system needs to be more attentive to abuse claims from children. Initial visitations with an abusive parent should be supervised. 3) In the past, children were not considered credible witnesses, but laws have changed to extend more protection and allow past victims more time to report abuse. Evidence gathering looks at physical injuries, psychological signs, and the child's knowledge of right and wrong.