%0 Journal Article %T Validation of a Learning Disability Index (LDI) Derived from a Principal Components Analysis of the WISC-R %A Tittemore, J. A. %A Lawson, J. S. %A Inglis, James %J Journal of Learning Disabilities %V 18 %N 8 %P 449-454 %@ 0022-2194 %D 1985-10-01 %I SAGE Publications %~ DeepDyve