ACKNOWLEDGMENTS

A special note of thanks is due to the many members of the scientific community who generously made available reports of their current work to the stail of the National Institute of Mental Health. Without their cooperation it would not have been possible to produce a document reflecting the most current data in a rapidly changing area.

Scientists of the Institute who had the primary responsibility for authorship of the report itself were: Dr. Robert C. Petersen, Dr. Jack Blaine, Dr. Monique Braude, Miss Eleanor Carroll, Dr. Louise Richards and Dr. Jean Paul Smith.