This book is a part of the Inventory of Published Research in Marriage
and the Family of the Minnesota Family Study Center in more than a formal
administrative sense. The work was begun at Cornell University as a subsidiary
part of a program to develop new techniques for measuring characteristics of
families. However, it was Reuben Hill who suggested its expansion and suggested
that I apply to the National Institute of Mental Health for funds to do
so. The first phase of the work was subsequently carried out with support from
that Institute under Grant No. M-5147A. After I joined the faculty of the
University of Minnesota, the work was supported by the Minnesota Family
Study Center, in part with funds made available by a grant from the Institute
for Life Insurance.