Mental Retardation in Four Countries

balance in these areas appears to be affected by the “move to the suburbs.” The figures on migration between States with common borders often reflect this type of movement. When, for example, roughly 1,400 aged beneficiaries moved from the District of Columbia to Maryland during the survey year and only 400 moved into that jurisdiction from Maryland, the result was a net, loss of 1,000 for the District of Columbia. Movement to Virginia also contributed to the total net loss of 1,480 in the number of aged migrating beneficiaries in the District of Columbia. Shifts to the suburbs are also reflected in the migration data for New Jersey. Because many more aged beneficiaries moved into New Jersey from Pennsylvania and New York than the number going in the opposite direction, New Jersey was the only populous State in either the Northeast or North Central regions without a significant decline in the number of aged beneficiaries brought about by migration.