This classic reference for administrators, educators, and counselors demystifies the specialized information embodied in the results of children's psychological tests. Explaining key principles and terminology, the author addresses the validity and authenticity of numerous widely used measures of emotional and mental development, intelligence, aptitude, and academic achievement. Instruments used for identifying children for services under IDEA are given special attention, as are those that provide data useful for developing IEPs. Updated to include revised and recently introduced tests, this critically acclaimed manual is a valuable addition to every nonpsychologist's library.