Michael C. Knaus, Michael Lechner and Anthony Strittmatter Michael C. Knaus is assistant professor of econometrics at the University St. Gallen and is also affiliated with IZA, Bonn (michael.knaus{at}unisg.ch). Michael Lechner is full professor of econometrics at the University St. Gallen and is also affiliated with CEPR, London; CESIfo, Munich; IAB, Nuremberg; and IZA, Bonn (michael.lechner{at}unisg.ch). Anthony Strittmatter is assistant professor for applied econometrics at the Center for Research in Economics and Statistics (CREST) and a faculty member of the ENSAE (anthony.strittmatter{at}ensae.fr).