How Smart Is Your Dog? If you've ever wondered what is really going on inside your dog's head, here is your chance to find out. In this revised and updated version of this perennially popular book, psychologist and prizewinning trainer Stanley Coren provides a startling view of the intelligence of our oldest and closest animal companions. Do dogs really think? Are they conscious in the same way humans are? What is the nature of canine memory? Can dogs communicate with us -- and, if so, how can we understand them? Do they have feelings such as guilt, loyalty, and jealousy? Do they experience joy and sorrow? Drawing on scientific research that has stood the test of the past decade, interviews with top breeders and trainers, and his own personal observations as a lifelong dog lover, Stanley Coren speculates on these and many other fascinating questions about man's best friend. He offers practical tips on how to evaluate your dog's body language and understand the sophisticated "language" of a dog's bark, and how to tailor a training program to suit your dog's special needs. Here, too, are the famous, controversial lists and rankings of more than 100 breeds for obedience and working intelligence, as well as for specialized tasks such as hunting, home security, and companionship. Rich in wit, wisdom, and anecdote, The Intelligence of Dogs is a book that will bring you a greater understanding and enjoyment of the habits, antics, and abilities of your dog.

Left-handedness has been shown to be a possible marker for various psychological and physical abnormalities. This book presents evidence by a number of researchers who evaluate whether there are indeed differences between left- and right-handers which extend into the broader psychological and physiological realms. Several chapters show that left-handedness is found in unexpectedly high proportions in populations that suffer from various immune deficiency diseases, in alcoholics, dyslexics, mental retardates, psychopaths and other clinical groups. The book indicates why left-handedness should be a marker for such conditions. The genetic and environmental pressures on handedness are explored. A model for pathological left-handedness is presented, along with some interesting data which suggests that left-handedness may be associated with reduced life-span. Finally, several chapters discuss the implications of handedness patterns in non-clinical populations.

In this title, first published in 1978, the authors survey the historical and contemporary research relating to two-dimensional visual-geometric illusions. They summarise and evaluate theories offered to explain these phenomena. Then provide a new conceptual framework suggesting that visual illusions are not unitary phenomena.