Performance Validity: Conceptual Definition and Clinical Implications; Continuous or Discrete?

January 13, 2023, 9:00 AM - 12:30 PM

Join us on January 13 as Dr. Laszlo Erdodi and Dr. Shayna Nussbaum discuss "Performance Validity: Conceptual Definition and Clinical Implications; Continuous or Discrete?"


SCHEDULE - NOTE: All times are ET.

9:00 am Free-standing vs embedded Performance Validity Tests (PVTs): pros and cons

9:15 am The evolution of PVT cutoffs and what it reveals about the nature of the underlying constructs (e.g., TOMM)

9:30 am Multivariate models: rationale, logistics and evidence base

9:45 am Mo’ PVTs, mo’ problem? The relationship between the number of PVTs administered and the multivariate false positive rate

10:00 am The curse of abundance: navigating multivariate cutoffs during the proliferation of embedded PVTs

10:15 am As multivariate cutoffs increase, the need for a third outcome is becoming obvious: the indeterminate range between Pass and Fail

10:30-10:45 am Break

10:45 am An empirical demonstration of adjusting cutoffs in multivariate models of PVTs

11:15 am Fine-tuning multivariate models: ACS and EI

11:30 am Daubert/Mohan standards and the EI

12:00 pm Questions

12:30 pm Event Ends



Dr. Laszlo Erdodi is an Associate Professor in Psychology at the University of Windsor and a registered clinical neuropsychologist in Ontario. He completed his PhD in Clinical Psychology at Eastern Michigan University, a pre-doctoral internship at the London Health Sciences Center specializing in clinical neuropsychology and a two-year post-doctoral fellowship in clinical neuropsychology at the Geisel School of Medicine at Dartmouth in Lebanon NH (USA). His long-standing research interests revolve around psychometrics, performance validity testing in cognitive assessment, and cross-cultural neuropsychology. He developed a novel method for aggregating multiple individual PVTs into a composite measure of performance validity that takes into account both the number and extent of PVT failures, while acknowledging the indeterminate range as a legitimate third outcome of performance validity assessment. The empirical support for the EI model has been rapidly accumulating in recent years.

Dr. Shayna Nussbaum is a licensed Psychologist (Certificate No. 6635) in the Province of Ontario. She was granted a license for autonomous practice in 2019. She practices in Clinical Neuropsychology, Clinical Psychology, and Rehabilitation Psychology. During her doctoral training, Dr. Nussbaum completed a residency at The Ottawa Hospital in Ottawa, Ontario, in the area of Clinical Neuropsychology. Dr. Nussbaum currently maintains practice in treatment and assessment, including psychological and neuropsychological assessments of persons with brain, orthopaedic, and mental stress injury and a variety of mental health difficulties. She is a staff psychologist in Outpatient Mental Health at Humber River Hospital, where she provides treatment and assessment and collaborates on the development and evaluation of mental health programs. She is an Early Career Board Member of the Canadian Academy of Psychologists in Disability Assessment. She is certified in Independent Medical Evaluation and Catastrophic Impairment Evaluation through the Canadian Society of Medical Evaluators/ Canadian Academy of Psychologists in Disability Assessment.