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The Nathan S. Kline Institute for Psychiatric Research

Diana Sidtis, CCC/SPL, Ph.D.

Diana Sidtis, CCC/SPL, Ph.D.

Research Scientist, Brain & Behavior Laboratory Co-Director
Geriatric Psychiatry

Faculty Directory


Diana Van Lancker Sidtis holds a BA from the University of Wisconsin, Masters Degrees from the University of Chicago (Anglistics) and CSULA (Speech-Language Pathology), and a PhD (Linguistics) from Brown University. She was awarded an NIH Postdoctoral Fellowship in Communication Disorders at Northwestern University and is licensed as a Speech Pathologist. Her research examines speech and language behaviors in normal and neurologically impaired persons. Studies of voice perception led to a book coauthored with Jody Kreiman, Foundations of Voice Studies, which received the American Publishers Prose Award for 2011. She is active in mentoring doctoral students in research on voice, speech, and language in bilingualism, stroke, Parkinson’s and Alzheimer’s disease. Research in our laboratory includes speech and language function in persons diagnosed with Parkinson’s disease following treatment with deep brain stimulation (a medical therapy for movement disorders), Alzheimer’s disease, and schizophrenia. Our goal in designing and executing research studies is to describe brain processes underlying human behavior, leading to improved evaluation and informed treatment of persons with neurological impairments.

  • Approaches to intelligibility studies in deep brain stimulation. 2nd International Symposium on Basal Ganglia Speech Disorders and Deep Brain Stimulation, Aix-en-Provence, France, June 29-July 1, 2010.
  • Keynote speaker:  Gesellschaft für Aphasieforschung und –behandlung (Society for Aphasia Research and Treatment).  Neurologische Perspektive formelhafter Sprache (“Neurological perspectives on formulaic language”) (talk given in German). November 4-6, Münster, Germany, 2010.
  • Special panel on Motor Speech Disorders. American Speech-Language Hearing Association Annual Meeting # 1018. Current studies of speech in Parkinson’s disease.” November 15, 2012.  
  • Keynote speaker:  8th PPRU Workshop on Person Perception. Foundations of voice studies. October 10-11, University of Jena, Jena, Germany, 2013. 
  • Keynote speaker:  Department of Linguistics, University of Düsseldorf, Düsseldorf, Formulaic expressions:  identification, classification, utilization. Germany, January 12, 2016.
Select Publications

Van Lancker Sidtis, D. (2019). “Because it sounds right”: a guiding light of speaker knowledgeStudies in English Language Teaching, 7 (3).

Kim Y, Sidtis JJ, Van Lancker Sidtis D. Emotionally expressed voices are retained in memory following a single exposure. PLoS One. 2019 Oct 17;14(10):e0223948.

Sidtis DVL, Sidtis JJ. The Affective Nature of Formulaic Language: A Right-Hemisphere Subcortical Process. Front Neurol. 2018 Jul 24;9:573.

Monti, E. & Van Lancker Sidtis, D. (2018). Can childhood trauma impact the voice through the brain? Journal of Interdisciplinary Voice Studies, 3(1), 45-59.