Text ( visual ) : unmediated Nudge : improving decisions about health, wealth and happiness / Richard H. Thaler and Cass R. Sunstein. -- Revised ed. -- London : Penguin books , 2009. -- x, 305 p. : ill. ; 20 cm. -- "New international edition"--Cover (not appear in some copies) ; "First published in Great Britain by Yale University Press 2008"--T.p. verso ; "For the International Edition, we wish to thank once again ..."--Acknowledgments (p. x) ; Includes bibliographical references (p. 270-293) and index. -- ISBN 9780141040011 ; (BB01895178) ; https://ci.nii.ac.jp/ncid/BB01895178 Author Heading(s): Thaler, Richard H. ; Sunstein, Cass R.. -- Classification(s): DC22 : 330.019. -- Subject Heading(s): LCSH : Economics -- Psychological aspects ; LCSH : Choice (Psychology) -- Economic aspects ; LCSH : Decision making -- Psychological aspects ; LCSH : Consumer behavior