"This is a college-level textbook that provides a comprehensive and credible theory of how humans can learn and retain substantial and growing bodies of potentially meaningful, organized subject-matter knowledge on an extended, long-term basis. It identified explicitly the cognitive conditions under which such learning and retention occur, and indicates how they are influenced by relevant cognitive structure, frequency, mental "set" and motivational variables, and most important, by the probable underlying functional cognitive processes involved."--Jacket.