Evidence map›Paper›PMID 27336038›Full record

ArticleNPJ schizophrenia2015

Automated analysis of free speech predicts psychosis onset in high-risk youths.

Gillinder Bedi, Facundo Carrillo, Guillermo A Cecchi, Diego Fernández Slezak, Mariano Sigman, Natália B Mota, Sidarta Ribeiro, Daniel C Javitt, Mauro Copelli, Cheryl M Corcoran

Open access · goldAbstract read
In one paragraph

Article in NPJ schizophrenia, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 249 papers, 9 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
249citing papers in PubMed, 9 pooled it
20.0field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

249 citing papers in PubMed, 9 syntheses or guidelines pooled it, 668 citations in OpenAlex.

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  9. The link between formal thought disorder and social functioning in schizophrenia: A meta-analysis.European psychiatry : the journal of the Association of European Psychiatrists · 2020
    Pooled it
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  12. The entropic brain today.Brain : a journal of neurology · 2026
    Review
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  16. Structural neuroimaging correlates of semantic incoherence in schizophrenia.European archives of psychiatry and clinical neuroscience · 2026
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189 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 6 institutions in 3 countries.

Gillinder BediDepartment of Psychiatry, College of Physicians and Surgeons of Columbia University, New York, NY, USA; Division on Substance Abuse, New York State Psychiatric Institute, New York, NY, USA.
Facundo CarrilloDepartment of computer Science, School of Sciences, Universidad de Buenos Aires , Buenos Aires, Argentina.
Guillermo A CecchiComputational Biology Center-Neuroscience, IBM T.J. Watson Research Center , Yorktown Heights, NY, USA.
Diego Fernández SlezakDepartment of computer Science, School of Sciences, Universidad de Buenos Aires , Buenos Aires, Argentina.
Mariano SigmanDepartment of Physics, School of Sciences, Universidad de Buenos Aires , Buenos Aires, Argentina.
Natália B MotaBrain Institute, Federal University of Rio Grande do Norte , Natal, Brazil.
Sidarta RibeiroBrain Institute, Federal University of Rio Grande do Norte , Natal, Brazil.
Daniel C JavittDepartment of Psychiatry, College of Physicians and Surgeons of Columbia University, New York, NY, USA; Division of Experimental Therapeutics, New York State Psychiatric Institute, New York, NY, USA.
Mauro CopelliDepartment of Physics, Federal University of Pernambuco , Recife, Brazil.
Cheryl M CorcoranDepartment of Psychiatry, College of Physicians and Surgeons of Columbia University, New York, NY, USA; Division of Experimental Therapeutics, New York State Psychiatric Institute, New York, NY, USA.
University of Buenos Aires · ARUniversidade Federal do Rio Grande do Norte · BRColumbia University · USNew York Psychoanalytic Society and Institute · USNew York State Psychiatric InstituteUniversidade Federal de Pernambuco · BR

Funding

Clinical and Translational Science AwardUL1TR000040 · NCATS · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI GINSBERG, HENRY N · 2012 to 2015
$26.2M
The Conte Center for Schizophrenia ResearchP50MH086385 · NIMH · NEW YORK UNIVERSITY SCHOOL OF MEDICINE · PI ROBINSON, JAMES A. · 2009 to 2013
$10.7M
Neurobehavioral Mechanisms of Decisions to Smoke Marijuana and Cocaine in HumansK23DA034877 · NIDA · NEW YORK STATE PSYCHIATRIC INSTITUTE DBA RESEARCH FOUNDATION FOR MENTAL HYGIENE, INC · PI BEDI, GILLINDER I. · 2013 to 2017
$930k
Schizophrenia risk to onset: Neurobiology and preventionK23MH066279 · NIMH · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI CORCORAN, CHERYL MARY · 2004 to 2008
$884k
Olfaction in the Psychosis Prodrome: Behavioral and ERP MeasuresR21MH086125 · NIMH · NEW YORK STATE PSYCHIATRIC INSTITUTE DBA RESEARCH FOUNDATION FOR MENTAL HYGIENE, INC · PI BRUDER, GERARD E, CORCORAN, CHERYL MARY · 2009 to 2010
$440k
NCATS NIH HHS UL1 TR000040NIDA NIH HHS K23 DA034877NIMH NIH HHS K23 MH066279NIMH NIH HHS P50 MH086385NIMH NIH HHS R21 MH086125
6 · The paper itself

Abstract

BACKGROUND/

objectivesPsychiatry lacks the objective clinical tests routinely used in other specializations. Novel computerized methods to characterize complex behaviors such as speech could be used to identify and predict psychiatric illness in individuals.

aimsIn this proof-of-principle study, our aim was to test automated speech analyses combined with Machine Learning to predict later psychosis onset in youths at clinical high-risk (CHR) for psychosis.

methodsThirty-four CHR youths (11 females) had baseline interviews and were assessed quarterly for up to 2.5 years; five transitioned to psychosis. Using automated analysis, transcripts of interviews were evaluated for semantic and syntactic features predicting later psychosis onset. Speech features were fed into a convex hull classification algorithm with leave-one-subject-out cross-validation to assess their predictive value for psychosis outcome. The canonical correlation between the speech features and prodromal symptom ratings was computed.

resultsDerived speech features included a Latent Semantic Analysis measure of semantic coherence and two syntactic markers of speech complexity: maximum phrase length and use of determiners (e.g., which). These speech features predicted later psychosis development with 100% accuracy, outperforming classification from clinical interviews. Speech features were significantly correlated with prodromal symptoms.

conclusionsFindings support the utility of automated speech analysis to measure subtle, clinically relevant mental state changes in emergent psychosis. Recent developments in computer science, including natural language processing, could provide the foundation for future development of objective clinical tests for psychiatry.

Identifiers

PMID27336038
PMCPMC4849456
OpenAlexW1267646904

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.