Deconstructing processing speed deficits in schizophrenia: Application of a parametric digit symbol coding test
نویسندگان
چکیده
منابع مشابه
Clinical correlates of parametric digit-symbol substitution test in schizophrenia
Processing speed deficit, ascertained by digit-symbol substitution test (DSST), is considered as a fundamental impairment in schizophrenia. Clinical correlates of processing speed abnormalities, especially using the parametric version of DSST is yet to be evaluated comprehensively. In this study, we examined schizophrenia patients (N=66) and demographically matched healthy controls (N=72) using...
متن کاملSpeed and memory in the WAIS-III Digit Symbol--Coding subtest across the adult lifespan.
The primary role of speed in determining Digit Symbol scores is well established. Among the important questions that remain to be resolved are: (1) whether speed accounts for all of the age-related decline in Digit Symbol scores, and (2) whether memory ability makes any significant contribution to Digit Symbol performance, especially after controlling for speed. We analyzed data from the WAIS-I...
متن کاملDigit symbol coding and general cognitive ability in schizophrenia: worth another look?
For decades, schizophrenia researchers have sought to map specific aspects of cognitive performance onto specific neurobiological systems in hopes of dividing broad cognition and neurobiology into more tractable components. Recent findings from studies using neuropsychological test batteries, in combination with emerging neurobiological evidence, argue for a complementary focus on more generali...
متن کاملOverlooking the obvious: a meta-analytic comparison of digit symbol coding tasks and other cognitive measures in schizophrenia.
CONTEXT In focusing on potentially localizable cognitive impairments, the schizophrenia meta-analytic literature has overlooked the largest single impairment: on digit symbol coding tasks. OBJECTIVE To compare the magnitude of the schizophrenia impairment on coding tasks with impairments on other traditional neuropsychological instruments. DATA SOURCES MEDLINE and PsycINFO electronic databa...
متن کاملDigit symbol substitution test score and hyperhomocysteinemia in older adults
Mounting evidence shows that hyperhomocysteinemia is a risk factor for cognitive decline. This study enrolled subjects with normal serum levels of B12 and folate and performed thorough neuropsychological assessments to illuminate the independent role of homocysteine on cognitive functions.Participants between ages 50 and 85 were enrolled with Modified Hachinski ischemic score of <4, adequate vi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Schizophrenia Research
سال: 2010
ISSN: 0920-9964
DOI: 10.1016/j.schres.2010.02.1029