; and (iv) an amount equal to 1/2 of 1 percent of such amount appropriated may be reserved by the Secretary to conduct research and demonstration activities, as well as periodic external, independent evaluations of the impact of the Child Care and Development Block Grant program established under subchapter C of chapter 8 of title VI of the Omnibus Budget Reconciliation Act of 1981 ( Public Law 97–35 ), as carried out under this subsection and under such subchapter, on increasing access to child care services and improving the safety and quality of child care services, using scientifically valid research methodologies, and to disseminate the key findings of those evaluations widely and on a timely basis. . (b) Redistribution of funds reserved for tribal grants Section 418(a) of such Act ( 42 U.S.C. 618(a) ) is amended— (1) by redesignating paragraph (5) as paragraph (6)