This book walks psychologists through the study of motivation, exploring all conditions that exist within the person and within the environment and culture that explain ?why we want what we want? and ?why we do what we do. CONDITION â USED: Books sold are in GOOD or better condition. Good Condition: Minimal damage to the cover, dust jacket may not be included, minimal wear to binding, most of the pages undamaged(e.g., minimal creases or tears), highlighting / underlining acceptable on books as long as the text is readable and markings are not excessive, no missing pages. May be a former library book, with usual treatments(e.g., mylar covers, call stickers, stamps, card pockets, barcodes, or remainder marks). Extra components, such as CDs, DVDs, figurines, or access codes are not included. ISBN: 9780470392232 ISBN10: 0470392231 Contributors: Reeve, Johnmarshall,