Addiction and social interaction / Karl Ove Moene -- Addiction, weakness of the will, and relapse / Olav Gjelsvik -- The dangers of willpower / George Ainslie -- The neurobiology of chemical addiction / Eliot L. Gardner and James David -- To legalize or not to legalize: is that the question? / Helge Waal -- Rationality, irrationality, and addiction - notes on Becker's and Murphy's theory of addiction / Ole-J²rgen Skog -- Gambling and addiction / Jon Elster -- A visceral account of addiction / George Loewenstein -- Epilogue: rationally coping with lapses from rationality / Thomas Schelling