There is accumulating evidence that readers continually evaluate the consistency, congruence, and coherence of text by processes of validation. Validation is initiated immediately on stimulus presentation, may proceed nonstrategically, and serves as a criterion for representational updating. However, validation exhibits a variety of deficiencies.…

The Research Institute for the Study of Learning Disabilities, established at Teachers College, Columbia University, was guided by the postulation that academic failure experienced by learning-disabled children results from interaction between the way they process information and the information processing demands of the instructional methods…