@misc{KrappSchiefeleWinteler2009,
  author    = {Andreas Krapp and Ulrich Schiefele and Adolf Winteler},
  title     = {Interest as a predictor of academic achievement : a meta-analysis of research},
  institution = {Institut f{\"u}r Philosophie},
  series    = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe},
  number    = {paper 052},
  type      = {postprint},
  year        = {2009},
}