TY - JOUR T1 - Consequences of unmodeled nonlinear effects in multilevel models AU - Bauer, Daniel J. AU - Cai, Li PY - 2009 DO - 10.3102/1076998607310504 SP - 97 EP - 114 JO - Journal of Educational and Behavioral Statistics VL - 34 IS - 1 SN - 1076-9986 ER -