Psychological Medicine cambridge.org/psm Personal Tribute Cite this article: Rosen C, Pogue-Geile M (2023). In Memoriam: Martin Harrow, Ph.D. (1933–2023). Psychological Medicine 1–2. https://doi.org/10.1017/S0033291723000958 Received: 13 March 2023 Accepted: 27 March 2023 Corresponding author: Cherise Rosen, E-mail: ccrosen@uic.edu © The Author(s), 2023. Published by Cambridge University Press In Memoriam: Martin Harrow, Ph.D. (1933–2023) Cherise Rosen 1 and Michael Pogue-Geile 2 1 Department of Psychiatry, University of Illinois at Chicago, Chicago, USA and 2 Department of Psychology, University of Pittsburgh, Pittsburgh, USA With the passing of Professor Emeritus Martin Harrow, Ph.D. on February 21, 2023, the fields of Psychology, Psychiatry, and Phenomenology lost a brilliant scholar, scientist, mentor, and beloved friend. Dr. Harrow was born in Manhattan, New York City, in 1933 and was affectionately known by all as ‘Marty’. Dr. Harrow completed his undergraduate degree in 1955 at City University of New York with a major in Psychology and a minor in Philosophy and in 1961 he received his Ph.D. in Clinical Psychology from Indiana University at Bloomington, where his dissertation was an experimental study of concept formation. In his earliest faculty position at Yale University (1962) he advanced from staff psychologist to Chief Psychologist and Associate Professor dur- ing his 11-year tenure. While at Yale he began his life-long study of schizophrenia and psych- otic disorders, contributing to an early (1972) objective, quantitative scale of schizophrenia, the New Haven Schizophrenia Index, and commencing his studies on thought disorder and prognosis in schizophrenia. In 1973 he moved to The University of Chicago Department of Psychiatry and Michael Reese Hospital and Medical Center where the Chicago Follow-up study was initiated. In 1989 Dr. Harrow joined the Department of Psychiatry at the University of Illinois at Chicago and in 2012 was awarded Distinguished Professor Emeritus of Psychiatry and remained productive throughout the remainder of his career. Dr. Harrow’s signature contribution to the field was as the principal investigator of the landmark Chicago Follow-up study, a 20-year prospective and naturalistic study of hundreds of individuals, with diagnoses of schizophrenia, bipolar disorder, or major depression, who were evaluated during the acute phase of their index hospitalization and then reassessed at six subsequent follow-up evaluations over a 20-year period. Initiated at two urban hospitals in Chicago, Michael Reese Medical Center and the Illinois State Psychiatric Institute, it was funded consecutively for over 35 years by the National Institute of Health as well as by various foundations. One of the few such longitudinal studies in the U.S., the Chicago Follow-up Study charted and analyzed the naturalistic course of symptoms, cognition, functioning, and recov- ery in individuals diagnosed with schizophrenia and primary mood disorders across the years and in numerous publications. Dr. Harrow published well over 300 articles and several books over the course of his long career. His first publication in 1958 began his lifelong study of the underpinnings of thought formation that led to his seminal work in the longitudinal course and trajectory of thought disorder in psychosis. Utilizing the data from the Chicago Follow-up Study, he also made important contributions to the study of the trans-diagnostic longitudinal course of positive symptoms (delusions, hallucinations, first-rank symptoms), negative symptoms (anhedonia, deficit syndrome), prognosis and recovery outcomes, and antipsychotic treatment. Many times during his career Dr. Harrow was a voice in the wilderness as he followed the data and findings of the Chicago Follow-up study that often challenged the traditional understand- ing of schizophrenia and other psychotic disorders. By questioning established theory with longitudinal data his work literally changed the way the field thinks about schizophrenia and recovery not to mention challenging the need for long-term antipsychotics as the standard of care for individuals with schizophrenia. His research continues to promote thought and debate in the scientific community to this day and hopefully will continue to do so for a long time to come. Dr. Harrow served on numerous editorial boards of major academic journals and multiple departmental, State, and National committees, including as Chair of the tenure and promotion committee at the University of Illinois Department of Psychiatry for over 20-years, which speaks to his commitment to facilitating the advancement and development of junior faculty. He was a true mentor and many of his mentees have gone on to have remarkable careers in academia and industry. He also collaborated nationally and internationally on research. https://doi.org/10.1017/S0033291723000958 Published online by Cambridge University Press