The psychological immune system by Herman Kagan AuthorHouse (2006) ISBN 1420890050 Reviewed by Paige Lovitt for Reader Views (8/06) "The Psychological Immune System" was written to educate us on how the psychological immune system relates to the biological immune system. The author takes his theories beyond the functioning system of the individual and applies it to larger groups and organizations. Dr. Kagan has done extensive research on this topic and… Continue Reading