Ergonomics (Applied, Cognitive, Environmental, Organizational) Expert Witnesses: 9

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Dr. J. P. Purswell, PhD, PE, CPE has extensive experience in Human Factors, Ergonomics, and Safety Engineering. He holds a doctorate in Industrial & Systems Engineering from Virginia Tech. He has taught Safety Engineering and Ergonomics in the Industrial Engineering Department at CSU-Pueblo since 1999. 

A member of the Human Factors and Ergonomics Society and the American Industrial Hygiene Association, Dr. Purswell also served as the Chair of the Industrial Engineers PE exam from 2005 to 2009. He continues to serve on the committee which is responsible for the preparation of the national professional engineering examination in industrial engineering. 

Dr. Purswell is the author of more than 20 publications and presentations on Product Safety, Occupational Safety, Printed Warnings, and Auditory Warnings. Examples of products addressed include silica, asbestos, cleaning chemicals, gasoline containers, and recreational equipment. Dr. Purswell maintains NIST-calibrated equipment for the measurement of light, sound, force, and whole-body and hand-arm vibration in addition to standard photo and video equipment. 

Litigation Support - An Expert Witness in the legal industry since 1997, Dr. Purswell has been qualified as an expert in state and federal courts across the nation in safety engineering, including safety analysis techniques such as Fault Tree Analysis and FMEA as well as product warnings / instructions and OSHA compliance issues. His services include site inspections, document review, drafting Rule 26-compliant reports, deposition, and trial testimony. He has been retained by attorneys for both Plaintiff (40%) and Defense (60%) more than 100 times, has been deposed more than 100 times, and has testified at trial over 20 times. 

Areas of Expertise:

Warning and Safety Instructions OSHA Compliance Chemical Accident Prevention Product Safety Lockout / Tagout & Machine Guarding Trucks and Forklift Accidents

Power Tools Safety Hazard Communication - Audible Alarms Employer Safety Training and Supervision Perception / Reaction Time Ergonomic Work Practices Working and Walking Surfaces - Slip, Trip and Fall

View Dr. Purswell's Consulting Profile.

Dr. Kazerooni is a Professor of Mechanical Engineering at the University of California, Berkeley, where he also serves as the Director of the Berkeley Robotics and Human Engineering Laboratory. With over 35 years of experience in mechanical engineering and a doctorate from MIT, he is a leading expert in automated machinery, including robotics, medical devices, ergonomics and human-machine systems, wearable and assistive devices, exoskeleton systems, as well as orthotic and prosthetic systems. He is the inventor of more than 200 US and International patents, over 80% of which have been licensed, and has been inducted into the U.S. National Academy of Inventors.

In addition to his academic teaching and research, Dr. Kazerooni is an active entrepreneur. In 2005, he founded Ekso Bionics (eksobionics.com), which became a publicly traded company in 2014 and now supplies the Ekso medical exoskeleton to rehabilitation centers worldwide. He later founded suitX (suitx.com), a venture capital-, industry-, and government-funded company providing industrial and medical exoskeletons. suitX was acquired in late 2021 by Ottobock, a medical device company in Europe.

Litigation Support - Dr. Kazerooni has been deposed and testified in various Intellectual Property cases. His services include thorough examination and reporting, depositions, and trial testimony as needed.

Areas of Expertise:

• automated machinery
• robotics
• medical devices
• ergonomics and human-machine systems
• wearable and assistive devices
• exoskeleton systems
• orthotic and prosthetic systems
• intelligent assist devices
• control algorithm

Kevin Kucko, MAPT, ATC is a licensed Physical Therapist with over 23 years of experience. His specialty areas include Work-injury Reduction, Outpatient Services Development, and Physical Rehabilitation. 

Background Experience - Mr. Kucko began his career as an athletic trainer working with athletes from college through the NFL. He quickly focused on accelerating recovery times while rehabilitating orthopedic injuries. In 1995, he completed his Masters’ degree in Physical Therapy. Since that time, he has served as Department Director at various rehabilitation facilities throughout the east. 

Litigation Support - With over 13 years of experience performing Functional Capacity Evaluations, Mr. Kucko has helped hundreds of clients resolve cases with the best possible outcome. He provides services to attorneys representing both Plaintiff and Defense. Kevin Kucko offers meticulous review of medical records in preparation for trial and depositions. For cases where therapy and physical rehabilitation are involved, he sets the foundation by explaining medical conditions and interventions in a clear and concise manner that jurors understand. Mr. Kucko has been deposed and/or testified 14 times since 2010. 

Areas of Expertise:

Physical Therapy Physical Rehabilitation TMJ Dysfunction Peripheral Neuropathy

Sports Performance Neck and Back Pain Headaches Shoulder and Knee Rehab

NO COST CASE FILE REVIEW! 

Dr. Eric N. Brown, CIH, CSP, is a Certified Industrial Hygienist (CIH) and a Certified Safety Professional (CSP), with both certifications in good standing with the issuing boards. Dr. Brown holds a Doctorate in Public Health with an Industrial Hygiene specialization from the University of California at Los Angeles, and a Master’s degree in Public Health with an Occupational Health specialization from the Medical College of Ohio. He has over 25 years of experience in:

• Mold
• Thermal Comfort and Heat Stress
• Health and Safety
• Industrial Hygiene
• Indoor Air Quality Exposure 

Litigation Support - Dr. Brown has been a designated expert in thousands of cases, been and has testified in both trials and arbitrations. His expertise has never been successfully challenged. His services are available to attorneys representing both plaintiff and defendant. 

Areas of Expertise:

Asbestos Bad Faith Construction Safety Environmental Ergonomics Hazardous Materials Thermal Comfort and Heat Stress

Industrial Hygiene & Mold Landlord / Tenant Lead Poisoning Occupational / Environmental Health OSHA Safety Risk and Exposure Assessments

Dr. Theresa A. Schmidt, DPT, is an expert Orthopedic Physical Therapist with 35 years of clinical expertise and over 10 years of academic experience.  As an Approved Provider of continuing education for NY State Boards of Physical Therapy and Massage Therapy, and for the National Certification Board of Therapeutic Massage and Bodywork, Inc., (NCBTMB), she updates clinicians internationally on clinical practice guidelines, standards of care, examination and management of injuries, disease, movement impairments and disability.

Litigation Support - Dr. Schmidt offers expert witness services to attorneys representing plaintiff and defense. She is dedicated to providing the latest evidence-based assessment and interventions to support functional outcomes. Dr. Schmidt offers meticulous, objective review of medical records and documentation.  She is an excellent communicator, engaging presenter, and expert orthopedic physical therapist with clinical, academic, and professional speaking experience.

Areas of Expertise:

Physical Therapy Orthopedic Rehabilitation Ergonomics Massage Massage Therapy Manual Therapy Falls Work-related injury Personal Injury

Exercise / Fitness Injury Physical Therapy Malpractice Chronic Pain Soft Tissue Injury Mobilization Allied Health Physiotherapy Physical Therapy Standard of Care Professional Ethics

Educise Education, Health and Wellness with Dr. Schmidt, DPT

Background Experience - Dr. Schmidt has been in private practice physical therapist for over 30 years. She has presented for American Physical, Occupational and Massage Therapy Associations, NASA Inomedic Health, Cleveland Clinic, Johns Hopkins, Vanderbilt Medical, Wake Forest, private companies and medical centers across the US.

Dr. Schmidt is an approved provider of continuing education by National Certification Board of Therapeutic Massage and Bodywork, Inc, NCBTMB, Inc., and New York State Board of Massage Therapy.  She is also a published author in medical journals and has published her research in MOJ Orthopedics, Journal of Complementary and Alternative Medicine, and Fascia Research Congress III.

View Dr. Theresa A. Schmidt's Consulting Profile.

Dr. Randy Atlas AIA , CPP is a Registered Architect, NCARB certified, and he practices Criminal Justice Architecture and Environmental Security Design. Atlas is a certified protection professional (CPP) with the American Society of Industrial Security (ASIS), and is an appointed member of the ASIS Security Architecture and Engineering Committee. Atlas has his doctorate in criminology and a masters of architecture. Dr Atlas is a Fellow  member of the American Institute of Architects (AIA).

Dr. Atlas has taught CPTED (Crime Prevention through Environmental Design) and criminal justice courses at Florida International University, Florida Atlantic University, and the University of Miami, Keiser University, and he is a trainer with the National Crime Prevention Institute at the University of Louisville. Dr. Atlas has been a technical Assistance consultant with the National Institute of Justice, National Institute of Corrections, and the Florida Department of Corrections and U.S. HUD Drug Elimination CPTED Program.

He has conducted ADA accessibility compliance audits for private and public sector clients, and served as an expert witness on over 200 premises liability lawsuits.

Dr. Atlas has been a speaker and trainer at security conferences from New Delhi, India to Seattle, Washington and has written over 200 articles in various publications on security, safety, and counter terrorism issues.

Dr. Adam K. Aleksander, PhD, PE, CSP, has over 40 years of experience in the areas of Mechanical Engineering, Human Factors, and Safety Engineering. He combines both academic credentials and active work in industry to provide a grounded perspective in Product Liability, Industrial Incidents, Warnings, and OSHA related issues. He is also a VP of an Energy Services firm, with over 35 overseas assignments related to forensic services, power utility issues, and equipment failures.

Dr. Aleksander has been a practicing engineer since 1972, focusing his Manufacturing, Consulting and Forensic investigations on Problem Definition and Root Cause Analysis of complex problems in confidential issues. His firm has experience encompassing an enormous variety of claims, from large $45 million dollar dam claims, to environmental clean-up claims, to small road construction claims. His litigation services often involve reconstruction, perception reaction studies, warnings, equipment operation, mechanical failures, industrial accidents, skiing, and bicycling injuries.

As an Expert Witness, Dr. Aleksander has worked with many clients, including plaintiff's and defendant's attorneys, both civil and criminal, attorneys representing corporations, corporations in the power utility area, and corporations that produce products. His services are also available to insurance executives with complex claims issues that involve industrial or utility related losses. Dr. Aleksander has been retained over 125 times in a wide range of technical investigations.

Litigation Expertise:

• Product Liability - Design, Manufacturing and Marketing Defects, Involving Damage, Injury or Fatality
• Equipment Failures - Proximal Cause of Failure with Contributing Factors
• Human Factors, Visibility, Ergonomics, and General Research Issues - Product Usability, Warnings, Instructions, Perception, Reaction Time, Visibility and Conspicuity Issues
• Construction, OSHA, and Safety Engineering - Regulatory and Safety Issues
• Industrial Projects
• Power Utility - Service and Equipment Failures

View Dr. Aleksander's Consulting Profile.

Christopher J. Kennedy holds a BS in Industrial Engineering and is an ACTAR-accredited Accident Reconstructionist with EIT and AEP credentials. He integrates engineering analysis, EDR data interpretation, UAV-based mapping, and human factors evaluation to reconstruct collisions, assess visibility, and quantify perception response. His work relies on validated measurement, objective modeling, and data-driven engineering principles to deliver clear, defensible forensic conclusions.