@article{KretschmannVockLuedtkeetal.2019,
  author    = {Julia Kretschmann and Miriam Vock and Oliver L{\"u}dtke and Malte Jansen and Anna Gronostaj},
  title     = {Effects of grade retention on students' motivation: A longitudinal study over 3 years of secondary school},
  journal   = {The journal of educational psychology},
  volume    = {111},
  number    = {8},
  pages     = {1432 -- 1446},
  doi       = {10.1037/edu0000353},
  year      = {2019},
}