Staff Directory
Current personnel · Governance by Committee on Succession
The Institute operates under the governance of the Committee on Succession, comprising members drawn from the academic community. Committee membership and meeting minutes are not published. Day-to-day research, archival, and administrative functions are managed by the following personnel. Further details on governance →
Current Staff
Dr. Helena Sorensen
Dr. Sorensen was appointed Director of the Institute in 2023 on the recommendation of the Committee on Succession. She holds a doctorate in perceptual psychology from the University of Copenhagen and previously held research appointments at the Max Planck Institute for Human Development, Berlin, and the Institute for Perceptual Studies, Zürich. Her published work addresses construct stability in longitudinal assessment, with particular attention to the effects of repeated exposure on response patterns.
As Director, Dr. Sorensen has overseen the Institute’s recovery from the 2024 institutional review and the resumption of several research programmes previously paused during that period. She is responsible for the Institute’s overall research direction, external institutional relationships, and compliance with the conditions of the Institute’s charitable trust registration.
Dr. Cordelia March
Dr. Cordelia March joined the Institute for Projective Sciences in 2019 to establish and oversee the Institute’s research governance framework. She brings expertise in construct validation methodology, assessment standards development, psychometric certification, and institutional ethics.
Prior to joining the Institute, Dr. March held roles at J. B. Fowler (Precision Stimuli) (2016–2017), where she worked in client relations and standards compliance, before founding the Perceptual Analytics Group in 2018. Her work at the Institute draws on two decades of professional engagement with projective assessment methodology across research, manufacturing, and commercial deployment contexts.
At the Institute, Dr. March is responsible for ensuring the rigour and defensibility of all projective assessment research, overseeing the Institute’s peer review processes, maintaining ethical oversight of the Institute’s archival holdings, and developing governance protocols for restricted materials. She was instrumental in developing the Institute’s updated governance protocols following the 2024 institutional review.
Dr. Markus Keller
Dr. Keller holds a doctorate in archival science from the University of Zurich. He is responsible for the preservation, cataloguing, conservation monitoring, and access management of the Institute’s archival holdings, including the Archive of Perceptual Response Data (4.7 million protocols) and the Institute’s restricted materials collections. He oversees the digitisation partnership with J. B. Fowler (Precision Stimuli) and maintains the Institute’s condition monitoring and disaster recovery frameworks.
Dr. Keller also leads the Institute’s investigation into semantic categorisation across response latency tiers and coordinates the Institute’s archival preservation standards research programme.
Dr. Joseph Roth
Dr. Roth holds a doctorate in cross-cultural psychology from the University of Geneva. His research addresses boundary dissolution in non-clinical populations and cross-cultural response patterns in projective assessment. His programme was paused during the 2024 institutional review and resumed under revised protocols in early 2025.
Dr. Roth also contributes to the Institute’s investigation of cross-population variance in projective assessment, building on the foundational work of Prof. Richard S. Taneja.