This report was edited and the overview written by Paul Taylor, executive vice president of the Pew Research Center and director of its Social and Demographic Trends project. Senior researcher Rakesh Kochhar and senior economist Richard Fry researched and wrote the report. Research assistant Seth Motel helped with the preparation of charts. The report was number-checked by Motel and Pew Research Center staff member Gabriel Velasco. The report was copy-edited by Marcia Kramer. The Center is grateful for the expeditious assistance of Nasrin Dalirazar of the Housing and Household Economic Statistics Division of the . Census Bureau on the definition of SIPP net worth components, weighting issues, and the replication of wealth tabulations published by the Census Bureau.