Dr. Biddle has been in the EEO/HR field for over 20 years and has invested thousands of hours in EEO-related cases and projects. He has worked as an expert witness and/or consultant in over 100 EEO-related cases. Dr. Biddle's primary focus at Biddle Consulting Group, Inc. is test development and validation and working as an expert in EEO litigation matters.

As the President of Fire & Police Selection, Inc., Dr. Biddle works on the development and validation of numerous written, personality, verbal, and physical ability tests.