-- Dr. Wolfgang Langer - Assistant Professeur Associé de l'Université du Luxembourg - - Associate Assistant Professor at the University of Luxembourg - Martin-Luther-Universität Halle-Wittenberg Institut für Soziologie Emil-Abderhalden-Str. 7 06099 Halle (Saale) Martin-Luther-University Halle-Wittenberg Institute of Sociology Emil-Abderhalden-Str. 7 D06099 Halle (Saale) E-mail: wolfgang.langer@soziologie.uni-halle.de Homepage: www.soziologie.uni-halle.de/langer/ Institute: Tel.: ++49/ (0)345 5524248 Fax.: ++49/ (0)345 5527149 Privat: Tel.: ++49/ (0)345 2021819 "It's better to have an approximate solution to the right problem than to have an exact solution to the wrong one." (John Tukey 1988) or for insiders "Statistics can't work magic." (Howard Winer 1989) or for optimists "Murphy's Laws for Researchers: (1) If you think of something new, it's been done. (2) If you think something is important, no one else will. (3) If you throw it away, someone else will publish it, obtain a grant, write a book, and get on the Oprah Winfrey show." (Joop Hox 2000)