James W. Kalat2025-06-192017-02-20978-1-305-63054-3https://repository.act.ac.rw/handle/123456789/73to begin the job of writing a textbook, a potential au thor needs self-confidence bordering on arrogance and, to complete it, the humility to accept criticism of favorite ideas and carefully written prose. A great many people provided helpful suggestions that made this a far better text than it would have been without them. My acquisitions editor, Clayton Austin, has been very helpful and supportive throughout the preparation of this edition. I have been delighted to work with Michelle Newhart, my developmental editor, who provided helpful, intelligent advice on everything from the big picture to the details. I thank them for their tireless help.enBook