Diagnostic Assessment Expert Witnesses
Diagnostic assessment expert witnesses and consultants listed here may be able to form expert opinions, draft expert witness reports, provide expert witness testimony at deposition and/or trial as or serve as consulting (non-testifying) experts on diagnostic assessment. The diagnostic assessment expert witness listings on this page are typically from fields/areas of expertise such as: Forensic Psychology, Neuropsychology, and Psychology.
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Dr. Colleen Long, Psy.D. Forensic & Neuropsychology Expert
Psychodiagnostic Forensic & Medical Legal Expert
BonPsy Wellness
Mission Viejo, California
Forensic Psychology, Neuropsychology
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Psychological Testing, Personal Injury, Trauma, PTSD, Expert Testimony, Criminal Competency, TBI, Fitness for Duty, Civil Litigation, Forensic Evaluation, Diagnostic Assessment, High Conflict Divorce, Violence Risk Assessment, Insanity/NGRI, Pediatric Neuropsychology, Civil Competency, Conservatorship, Workers Compensation, IME/AME
Dr. Colleen Long, Licensed Clinical Psychologist
Mission Viejo, California
Forensic Psychology and Neuropsychology – Neuropsychological Assessment, Diagnostic Assessment, Pediatric Neuropsychology, Geropsychology, Clinical Report Writing, Differential Diagnosis, PTSD, TBI, Malingering, Criminal Competency, Civil Competency, Emotional Damages, Workers’ Compensation, High Conflict Divorce.
Professional Profile
Dr. Colleen Long is a highly experienced clinical psychologist and neuropsychologist with over 15 years of private practice and institutional experience. She specializes in the forensic application of neuropsychological assessments across the entire developmental lifespan; from children and adolescents to adults and the geriatric population.
With a career history of over 8,000 evaluations, Dr. Long is recognized for her precision and diagnostic authority. She possesses the rare ability to translate raw psychometric data into sophisticated, court-ready clinical reports that do m...
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Lucas A Klein, Ph.D.
Expert Psychologist: Reports/Testimony/Consults
DR KLEIN PSYCHOLOGICAL SERVICES, INC
San Diego, California
Psychology, Forensic Psychology
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Symptom Validity, Psychological Testing, Emotional Damages, PTSD, Sexual Abuse, Qualified Medical Evaluations, Civil Litigation, Emotional distress, Personal injury, Trauma and abuse, Diagnostic Assessment, Motor Vehicle Accident, Capacity, Diagnostic Assessment, Post Traumatic Stress Disorder, Defense Base Act Claims, Malingering
I am a forensic psychologist with over 15 years in private practice, specializing in psychological evaluations across civil, criminal, and correctional contexts. My background combines scientific training in psychological assessment with clinical depth, including psychoanalytic training, enabling evaluations that are psychometrically sound and contextually thorough.
Areas of Expertise
Psychological Testing: Extensive experience with assessments including malingering/symptom validity, PTSD, cognitive functioning, and personality profiling.
Communication: Experienced in translating complex psychological data into clear, well-organized written reports and courtroom testimony.
Dual Training: Clinical and forensic background, with attention to both overt presentation and underlying psychological dynamics.
Consultation: Complimentary initial consultations to assess case fit; referrals provided when another specialist is better suited.
Types of Cases
Civil Litigation
Qualified Medical E...