The Tell-tale Eye
by Eckhard H. Hess
First published 1975
With illustrations throughout, this is the first book on
pupillometrics representing a major step forward in the understanding of human
behaviour. Fascinating work presents a history of the subject, senses and
mental processes, the pupil and other measures, advertising and the pupil, and
much more. A pioneer in pupillometrics, a field of psychology based on thoughts
and emotions as revealed through the eye, Hess see the pupil as the body's
natural lie detector and a type of window to the brain. He found that changes
in attitude can be detected by measuring changes in pupil size, and that the
enlarged or constricted pupils can also affect the attitude and responses of
the person who observes them.