The right of a separated, divorced, or otherwise absent parent living elsewhere to see his or her children on some agreed-upon basis; some noncustodial parents dislike the implication that they are visitors and prefer the term parental access. The ability to visit one’s children is a basic parents’ right; the father of a child born to an unmarried mother, if he acknowledges the child as his own or if a paternity suit is successful against him, gains visitation rights, though he has no obligation to exercise them. Some states also legally protect grandparents’ rights to visit grandchildren, regardless of possible estrangement in the family, and grandparents’ organizations have been conducting intensive lobbying to extend recognition of such rights. In some special cases, a person who has no legal responsibility for the child but who is considered the psychological parent may also be granted visitation rights.