Eleanor Semel, Ed.D., is Professor Emerita at Boston University and is nationally recognized for her pioneering efforts in the field of learning disabilities and auditory perception. She is the co-author of widely used standardized tests, the Clinical Evaluation of Language Fundamentals family of products including: CELF-4, CELF-4 Spanish Edition and CELF-Preschool, among others.

Dr. Semel has co-authored language and learning disabilities textbooks, numerous journal articles, as well as many intervention programs such as: The Clinical Language Intervention Program, as well as CLIP Syntax Worksheets, CLIP Morphology Worksheets, CLIP Semantic Worksheets, CLIP Pragmatic Worksheets and the Clinical Language Intervention Program-Preschool.
 
She is also the author of educational software packages such as Following Directions and Left and Right, as well as the intervention programs Sound-Order-Sense (SOS), and the Semel Auditory Processing Program (SAPP).

Additional undertakings include consulting at The Salk Institute-Laboratory of Cognitive Neuroscience where she explored  and developed intervention strategies for Williams Syndrome, a rare genetic disorder with a distinct language and behavioral profile. She also served as National Educational Director for the Williams Syndrome Association.  Her recent endeavor includes co-authorship of a new book, "Understanding Williams Syndrome: Behavioral Patterns and Intervention".