Experimental psychology is the most important branch of psychology. The credit for establishing psychology on a scientific basis goes to experimental method. This method is now being used more and more in psychology constitutes compulsory part of courses of psychology for the under-graduate and post-graduate students in Indian Universities and also everywhare in the world. The present book, Experimental psychology, is a textbook focusing on the experimental methods in the fast growing area of psychology. It includes experiments in physiological psychology, nervous system, mental processes and aspect of human behaviour. Without going into minute details, the book, covering the latest trends in experimental psychology, aims at presenting the board putline of the subject keeping in view the examination question papers in the different Indian universities. The language used is lucid, simple and unburdened by techinical jargon. The presentation of subject matter has been made from the pragmatic viewpoint, following a tried and tested pedagonical style, enabling the reader to understand and grasp the subject.