@article {2271, title = {Hypothetischer Einsatz adaptiven Testens bei der Messung von Bildungsstandards in Mathematik [Hypothetical use of adaptive testing for the measurement of educational standards in mathematics] . }, journal = {Zeitschrift f{\"u}r Erziehungswissenschaft}, volume = {8}, year = {2007}, pages = {169-184}, author = {Frey, A. and Ehmke, T.} }