"Understanding, interpreting, and then integrating multiple pieces of information, across multiple formats and sources, is among the most important and difficult tasks facing individuals in the current information age. The editors of this volume have compiled the leading experts on this topic for a must-read handbook for anyone interested in comprehension, learning, critical reasoning, or problem-solving, and in particular, the challenging questions that surround the use of multiple sources: why it is crucial, how it happens, when it fails, and how to improve it."—Danielle McNamara, Professor in the Department of Psychology, Arizona State University, USA