LDDI: The Learning Disabilities Diagnostic Inventory

Each scale contains 15 easy-to-rate items. The items were generated after an extensive review of theoretical writings and empirical studies in learning disabilities, especially the literature that focused on the neuropsychological aspects of the disabilities. The appropriateness of the behaviors represented by the items was confirmed in a survey of experts in the field and by extensive research that is reported in the manual.

Don Hammill • Brian Bryant