The purpose of this book is to present an account of several different
studies of the relationship of food additives to child behavior and
learn- ing problems. Because the outcome of these studies has deep,
personal interest for many parents and their children, I have tried to
present the studies in such a way that the logic and evidence of the
studies is com- prehensible to informed adults interested in weighing
the facts for themselves. Unfortunately, the facts do not always follow
a straightfor- ward course. Part of my purpose has been to show the
complexities lying in the way of the answers to apparently simple
questions. I believe it is healthy and important for parents to examine
the scientific evidence on issues affecting their daily lives, and to
become aware of the process of research surrounding controversial claims
regarding new therapies. New ideas in behavioral science are often
difficult to track down and evaluate, and consequently there may be a
large gap between therapeu- tic claims and evidence bearing on those
claims. The mother who won- ders whether her child should be treated
with a special diet is unlikely to have the facts necessary to make a
judgment of the costs and benefits. She should however, know some of the
major pitfalls in coming to a conclusion for or against such a course.