In carrying out activities under
section 1701z–1 of this title, the Secretary is directed to undertake programs of studies and demonstrations within at least three standard metropolitan statistical areas to determine the extent of need for and cost effectiveness of providing pre-purchase, default and delinquency counseling and related services to owners and purchasers of single-family dwellings insured or to be insured under the unsubsidized mortgage insurance programs of the National Housing Act [
12 U.S.C. 1701 et seq.].