Anchoring effects in the elicitation of multidimensional beliefs : evidence from a representative survey experiment / Philipp Lergetporer (Technical University of Munich, CESifo and IZA), Thomas Rittmannsberger (Technical University of Munich), Katharina Werner (Pforzheim University, CESifo and IZA), Helen Zeidler (Technical University of Munich) ; IZA Institute of Labor Economics