Not a MyNAP member yet? Register for a free account to start saving and receiving special member only perks. Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book. The first is the way we raise our young. To a greater extent than for any other living creatures, the capacity of human offspring to survive and develop depends on an extended period of care and close association in activities with older members of the species.
The second unique characteristic is the way we manipulate and transform the en- vironment through the use of our heads and our hands. Over the course of human history the principal context for the first type of activity has been the family; for the second, it has been what in modern times is called the world of work.
Moreover, until relatively recently, at least in The authors express their appreciation to Gerri Jones who provided invaluable biblio- graphical assistance and typed innumerable successive versions of the manuscript. In our treatment of research on the effects of maternal employment, we are deeply indebted to previous reviews by Maccoby , Stolz , and, especially, Hoffman a, , , With the proliferation of studies in this area during the past decade, the reviewer's task becomes increasingly difficult.
Especially in her most recent assessment, Hoffman simplified our task with her thorough and discerning anaysis of a maze of often disparate findings.
We also wish to acknowledge the many references and constructive criticisms that were provided by colleagues and students at Cornell University and else- where, particularly Eleanor Maccoby, Jeylan Mortimer, Frank Furstenberg, Robert Ra- poport, and Joseph Pleck. Special appreciation is also expressed to the following staff members at the Bureau of Labor Statistics who responded with generosity and consummate care to innumerable requests for unpublished demographic data: Howard Hayghe, Allison Grossman, Elizabeth Waldman, and Ann Young.
