Meet our Experts
Greg Sadesky, Ph.D
VP Psychometric Services
As the big man on campus for our Professional Testing Services, Greg applies his expertise to ensure that your tests are fair, sound, and interpretable. He works with our partners to demystify the process at any stage of the assessment cycle.
In his spare time, Greg is passionate about rock climbing and loves to play the upright bass, but his favorite activity is spending time with family and friends.
Greg Pope, MSc
VP Examination Services
As VP Examination Services Greg is obsessed with ensuring that our high stakes customers get the services they need for their examination program, on time, and of the highest quality. Greg Pope and Greg Sadesky are joined at the hip when it comes to psychometrics, providing high stakes customers with soup to nuts psychometric services framed within the Assessment Life Cycle. With a diverse background in psychometrics, product management, and customer service Greg is well positioned to ensure that Yardstick customer solutions are valid and reliable. Working in the past in high stakes testing contexts and leading software developments in cheater detection and Computerized Adaptive Testing (CAT), the assessment domain energizes Greg. Informally known within the company as “the third Greg” he has a passion for psychometrics, backpacking, camping, and spending time with his wife Alina and two boys, Logan and Nathanial.
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Answers to Your Questions
QUESTION
Our organization uses classical test theory for item analysis but I often hear that we should be moving to IRT. I am unclear what the pros and cons of IRT are compared to classical test theory, can you shed come light on this for me please?
QUESTION
How do you determine the passing mark on a test?