sired outcomes, but if most readers gain in at least one of these areas, then, I have
successfully accomplished the goals that I set for myself when I began writing.

This is my favorite part, the opportunity to thank the many wonderful colleagues
who helped me with this book. I am grateful to Dr. Claire Etaugh at Bradley Uni-
versity and Dr. Nora Newcombe at Temple University for reading an earlier draft
of the entire book. Their insightful comments have greatly improved the text. Dr.
Neil Campbell from the University of California, Riverside, Dr. Michelle Paludi
from Hunter College, Dr. Anne Petersen from Pennsylvania State University, and
Dr. JoAnna Worthley from California State University, San Bernardino, all read
chapters and generously shared their expertise with me. Of course, I would like to
be able to attribute any errors that exist in the text to them, but, unfortunately, I will
have to assume this responsibility.

Many colleagues have written to me to share their research and to comment on
the myriad of issues. I thank them and the many other researchers whose work I
have cited. I also thank my wonderful family, my husband Sheldon and my chil-
dren Joan and Evan, for "being there" and for acting as sounding boards as I read
my way through a mountain of literature and asked them to consider the many
questions pertaining to sex differences in cognitive abilities.

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