Content is king in this electronic title (known as MITECS), which is essentially an Acrobat version of the printed MIT Encyclopedia of the Cognitive Sciences. Encyclopedia content is itself beyond reproach. Six broad, extended essays set the stage, while 471 signed, crisply written topical entries include useful lists of references and further readings. MITECS's cross-disciplinary approach covers topics ranging from "ethnopsychology" to "game theory" to "taste." But the publishers haven't exploited the opportunities afforded by electronic access on the disc. Once Acrobat Reader and Searcher software (included on the CD) are installed, you can pull up the text of the Encyclopedia and use a small navigation bar to jump from "Title," to "CIP," to "Dedication," to "Preface." When I tried to print the Preface, my command started a printout of the entire volume. (One must use the volume's page numbers to print a desired section.) Entries are indexed A-Z, and clicking on a letter brings you...