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Jay Crosby, Ph.D.


​Jay Crosby was a postdoctoral fellow in clinical psychology at New York Presbyterian Hospital/Weill-Cornell Medical College where he is specializing in the treatment of psychotic and personality disorders with adolescents and adults. He is currently working as a psychologist at Bellevue Hospital. He received his doctorate from Adelphi University, and has trained in both community mental health and state psychiatric hospital settings.  Dr. Crosby is working in the research lab of Dr. Yulia Landa conducting assessments with adolescents and young adults at risk for psychosis.  His research interests include first-break psychosis, the combination of psychodynamic and CBT approaches for severe mental illness, and the phenomenology of schizophrenia.  He holds an M.A. in Religious Studies from the University of Chicago, and has presented papers at professional conferences both nationally and abroad.

Deborah Siegel, M.A.


Deborah Siegel is a doctoral student in Clinical Psychology at the Derner Institute of Advanced Psychological Studies, Adelphi University. She is a former psychology extern for our research team and at New York Presbyterian Hospital's Continuing Day Treatment Program. Her research interests include psychotherapy process and outcome, and treatment development for schizophrenia disorders and the prevention of psychosis.

Andrew Schwehm, M.A.


Andrew J. Schwehm, M.A., is a fourth-year clinical psychology PhD student at St. John’s University with an interest in the neurobiology and treatment of individuals with serious mental illness and other cognitive disorders. A transplant from New Orleans, Andrew has previously worked on the inpatient unit at Jamaica Hospital, in outpatient services at St. John’s Center for Psychological Services, and with Dr. Yulia Landa’s CBT for Psychosis Research and Clinical Group at Mt. Sinai’s Icahn School of Medicine.

Nicole Bermeo


Nicole Bermeo is a graduate from New York University with a B.A. in Psychology and double minors in Spanish. Within the group, she was responsible for scoring, entering, and managing data from assessments for the CBT for the Prevention of Paranoia study. Additionally, Nicole has taken on many roles regarding the technological aspects of the group, including creating and managing the website as well as editing and assembling  videos for use within the studies. When necessary, she also assists Dr. Yulia Landa in the assembly of charts and graphs for the statistical results of the studies. 

Elnara Mikhailova

Elnara Mikhailova is a recent graduate of CCNY with a Bachelor of Science in Psychology. She worked as a research volunteer for Dr. Landa in whatever aspects she is needed. Her main responsibility was transcribing CBT sessions and communication interviews for further analysis. The goal is to use the transcripts to create a manual that facilitates the reproduction of the CBT training for other clinicians. Elnara was also occasionally involved in participant recruitment for the studies.

Dana Kukin


Dana Kukin was a research volunteer-extern for Dr. Yulia Landa. She attended Barnard College of Columbia University in the City of New York, majoring in Psychology. Dana assisted with the Cognitive Behavioral Therapy (CBT) for Psychosis Program. Her responsibilities included research and work on the training paper for the program. She also managed administrative aspects of the CBTp Training Program. In addition to her work with Dr. Landa, Dana works as a research assistant in the Variability and Creativity Lab at Barnard College. She is interested in a career in clinical psychology with a focus on psychosis in adolescents.

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