discussed and, for that reason, they will be controversial (to say the least). That
these policies are needed and that they should work if properly implemented seem
to me to be plausible in the light of the psychological and demographic facts to be
reviewed in this book but I do not pretend that these proposals follow in any
rigorous way from the facts in hand. I would argue, however, that the less radical
remedies that have been proposed by others are plainly implausible on current
evidence and that the kinds of remedies I suggest should at least to be seriously
discussed if we are ever to find the solutions to the problems that confront us.

One advantage of working in an academic department of the first class is that the
colleagues one prevails upon to read drafts of a work can be counted on to ferret
out errors and suggest valuable improvements. Professors T. J. Bouchard, Jr., I. I.
Gottesman, W. Grove, W. G. Iacono, M. McGue, A. Tellegen, and Regents
Professor P. E. Meehl, as well as my former student, Dr. S. Lilienfeld, read and
commented upon all or portions of this manuscript. Faced with the common
problem of wanting to acknowledge their generous help without burdening them
with responsibility for the product, I can say that, although each would have written
a different and perhaps better book himself, this book was vastly improved through
their assistance. Numerous graduate students have puzzled over earlier drafts and
their comments and suggestions have been helpful. My wife, Harriet, and my sons,
Jesse, Joseph, and Matthew, provided the perspectives, respectively, of an intelli-
gent lay person and former social worker, an expert in juvenile corrections, a
physicist, and a lawyer. For all of their help I will add the reader's thanks to my
own.

-- David T. Lykken

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