b. 1938
Nancy C. Andreasen is an American psychiatrist and neuroscientist whose empirical research on schizophrenia has significantly shaped both clinical practice and philosophical debates about mental illness. Her work integrating neuroimaging and genetic association studies with psychiatric nosology contributed to ongoing discussions about whether empirical findings can ground the conceptual analysis of mental conditions. She served as editor-in-chief of the American Journal of Psychiatry for nearly two decades.
Pioneered neuroimaging research linking brain structure and function to schizophrenia symptoms
Developed influential psychiatric symptom rating scales (SANS, SAPS) that shaped diagnostic practice
Argued for a neuroscience-grounded reconceptualization of mental illness beyond purely symptomatic criteria
Contributed to debates on how association studies inform the ontological analysis of psychiatric conditions
Edited the American Journal of Psychiatry from 1993 to 2012, shaping the field's research agenda