To eliminate the contribution of racial segregation to social ills, society must integrate the powerful, that is whites, with African Americans and other racial minorities. But this is not what has been happening. While the isolation of African Americans has declined since its peak, very little of the decline has been caused by integration with whites. Instead integration of African Americans with other racial minorities is responsible for more than 75 percent of the newfound diversity in neighborhoods where African Americans typically live. Since 1980 the percentage of whites living in the neighborhood of a typical African American has ticked up just a few points—at least, according to the method used in the Manhattan Institute report; other data show a slight decline in exposure—while the presence of Hispanics and Asians in the same neighborhoods has grown by twelve percentage points. Reflecting this pattern, sociologists Sean F. Reardon and Kendra Bischoff have shown that while the segregation of African Americans has moderately declined in the last 40 years, income segregation has grown dramatically over the same time period. The powerful and less powerful, haves and have-nots, remain separated.