Children and minors are defined as persons who have not attained the legal age for consent to treatment or procedures involved in the research. In the State of Mississippi the age of consent is 18. When children or minors are research subjects, researchers must obtain both the permissionof the parents (i.e., parental informed consent) and the assent of the child (i.e., the child's affirmative agreement to participate). Mere failure to object is not assent. The IRB has the authority to waive the requirement of assent. Special DHHS regulations applying to children may be found in45 CFR 46, Subpart D.