OBJECTIVE: We examined the neuropsychological functioning of youth enrolled in the NIMH funded trial, Treatment of Early-Onset Schizophrenia Spectrum Disorders (TEOSS). We compared the baseline neuropsychological functioning of youth with schizophrenia (SZ, n = 79) to those with schizoaffective disorder (SA, n = 40), and examined the relationship of different variables of illness severity and adaptive behavior to neuropsychological functioning. METHOD: Participants ranged in age from 8 to 19 years. Diagnostic status was confirmed via structured interview over multiple time points. Domains of neuropsychological functioning included fine-motor, attention, working memory, problem-solving efficiency, inhibitory control, and social cognition. Other variables included intelligence (IQ), academic achievement skills, adaptive behavior, and different measures of illness severity. RESULTS: The two groups did not differ on IQ or on any of the neuropsychological domains. The SZ group performed significantly lower in spelling. A high proportion of individuals in both groups reflected significant intellectual and academic achievement skill deficits. Significant correlations were found between the neurocognitive domains and both illness severity and adaptive behavior variables. CONCLUSIONS: There were few differences between the SZ and SA groups on IQ, achievement, or neuropsychological functioning; however, both groups showed significantly high rates of deficits in IQ and basic academic skills. Correlations of the neurocognitive functions with illness severity and adaptive behavior were small to moderate in magnitude. These findings continue to implicate the importance of neurocognitive functioning as a key area of vulnerability in the study of youth with schizophrenia spectrum disorders.
OBJECTIVE: We examined the neuropsychological functioning of youth enrolled in the NIMH funded trial, Treatment of Early-Onset Schizophrenia Spectrum Disorders (TEOSS). We compared the baseline neuropsychological functioning of youth with schizophrenia (SZ, n = 79) to those with schizoaffective disorder (SA, n = 40), and examined the relationship of different variables of illness severity and adaptive behavior to neuropsychological functioning. METHOD: Participants ranged in age from 8 to 19 years. Diagnostic status was confirmed via structured interview over multiple time points. Domains of neuropsychological functioning included fine-motor, attention, working memory, problem-solving efficiency, inhibitory control, and social cognition. Other variables included intelligence (IQ), academic achievement skills, adaptive behavior, and different measures of illness severity. RESULTS: The two groups did not differ on IQ or on any of the neuropsychological domains. The SZ group performed significantly lower in spelling. A high proportion of individuals in both groups reflected significant intellectual and academic achievement skill deficits. Significant correlations were found between the neurocognitive domains and both illness severity and adaptive behavior variables. CONCLUSIONS: There were few differences between the SZ and SA groups on IQ, achievement, or neuropsychological functioning; however, both groups showed significantly high rates of deficits in IQ and basic academic skills. Correlations of the neurocognitive functions with illness severity and adaptive behavior were small to moderate in magnitude. These findings continue to implicate the importance of neurocognitive functioning as a key area of vulnerability in the study of youth with schizophrenia spectrum disorders.
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Authors: S Kristian Hill; John A Sweeney; Robert M Hamer; Richard S E Keefe; Diana O Perkins; Hongbin Gu; Joseph P McEvoy; Jeffrey A Lieberman Journal: J Int Neuropsychol Soc Date: 2008-03 Impact factor: 2.892
Authors: Hreinn Stefansson; Dan Rujescu; Sven Cichon; Olli P H Pietiläinen; Andres Ingason; Stacy Steinberg; Ragnheidur Fossdal; Engilbert Sigurdsson; Thordur Sigmundsson; Jacobine E Buizer-Voskamp; Thomas Hansen; Klaus D Jakobsen; Pierandrea Muglia; Clyde Francks; Paul M Matthews; Arnaldur Gylfason; Bjarni V Halldorsson; Daniel Gudbjartsson; Thorgeir E Thorgeirsson; Asgeir Sigurdsson; Adalbjorg Jonasdottir; Aslaug Jonasdottir; Asgeir Bjornsson; Sigurborg Mattiasdottir; Thorarinn Blondal; Magnus Haraldsson; Brynja B Magnusdottir; Ina Giegling; Hans-Jürgen Möller; Annette Hartmann; Kevin V Shianna; Dongliang Ge; Anna C Need; Caroline Crombie; Gillian Fraser; Nicholas Walker; Jouko Lonnqvist; Jaana Suvisaari; Annamarie Tuulio-Henriksson; Tiina Paunio; Timi Toulopoulou; Elvira Bramon; Marta Di Forti; Robin Murray; Mirella Ruggeri; Evangelos Vassos; Sarah Tosato; Muriel Walshe; Tao Li; Catalina Vasilescu; Thomas W Mühleisen; August G Wang; Henrik Ullum; Srdjan Djurovic; Ingrid Melle; Jes Olesen; Lambertus A Kiemeney; Barbara Franke; Chiara Sabatti; Nelson B Freimer; Jeffrey R Gulcher; Unnur Thorsteinsdottir; Augustine Kong; Ole A Andreassen; Roel A Ophoff; Alexander Georgi; Marcella Rietschel; Thomas Werge; Hannes Petursson; David B Goldstein; Markus M Nöthen; Leena Peltonen; David A Collier; David St Clair; Kari Stefansson Journal: Nature Date: 2008-09-11 Impact factor: 49.962
Authors: O Puig; R Penadés; I Baeza; V Sánchez-Gistau; E De la Serna; L Fonrodona; S Andrés-Perpiñá; M Bernardo; J Castro-Fornieles Journal: Eur Child Adolesc Psychiatry Date: 2012-02-22 Impact factor: 4.785
Authors: Jean A Frazier; Anthony J Giuliano; Jacqueline L Johnson; Lauren Yakutis; Eric A Youngstrom; David Breiger; Linmarie Sikich; Robert L Findling; Jon McClellan; Robert M Hamer; Benedetto Vitiello; Jeffrey A Lieberman; Stephen R Hooper Journal: J Am Acad Child Adolesc Psychiatry Date: 2012-03-13 Impact factor: 8.829
Authors: S Kristian Hill; James L Reilly; Richard S E Keefe; James M Gold; Jeffrey R Bishop; Elliot S Gershon; Carol A Tamminga; Godfrey D Pearlson; Matcheri S Keshavan; John A Sweeney Journal: Am J Psychiatry Date: 2013-11 Impact factor: 18.112