2011
Social Cognitive Impairments and Negative Symptoms in Schizophrenia: Are There Subtypes With Distinct Functional Correlates?
Bell MD, Corbera S, Johannesen JK, Fiszdon JM, Wexler BE. Social Cognitive Impairments and Negative Symptoms in Schizophrenia: Are There Subtypes With Distinct Functional Correlates? Schizophrenia Bulletin 2011, 39: 186-196. PMID: 21976710, PMCID: PMC3523908, DOI: 10.1093/schbul/sbr125.Peer-Reviewed Original ResearchConceptsHigher social cognitionLower social cognitionSocial cognitive impairmentsHigh-negative symptom groupSocial cognitionNegative-symptom groupNegative symptomsCaruso Emotional Intelligence TestSocial cognitive measuresEmotional Intelligence TestSocial cognitive factorsCognitive impairmentSymptom groupsNegative symptom factorMayer-SaloveyCommon assessment instrumentsCognitive factorsCognitive measuresSubstance abuse historyIntelligence testsCore featuresAbuse historyIndependent dimensionsDistinct factorsSymptom factors
1999
Internal consistency, temporal stability and neuropsychological correlates of three cognitive components of the Positive and Negative Syndrome Scale (PANSS)
Bryson G, Bell M, Greig T, Kaplan E. Internal consistency, temporal stability and neuropsychological correlates of three cognitive components of the Positive and Negative Syndrome Scale (PANSS). Schizophrenia Research 1999, 38: 27-35. PMID: 10427608, DOI: 10.1016/s0920-9964(99)00004-3.Peer-Reviewed Original ResearchConceptsNegative Syndrome ScaleSyndrome ScaleInternal consistencyCognitive componentsDSM-IV diagnosisSymptom compositionConcurrent validityDiscriminant validityCognitive dysfunctionCognitive test measuresSchizoaffective disorderPANSS factorsTemporal stabilityNegative symptomsAdequate temporal stabilityPANSS dataFactor analytic studiesSymptomsSchizophrenia researchSimilar psychometric propertiesSchizophreniaDisorganized symptomsNeuropsychological correlatesCognitive domainsPoorer psychometrics
1997
Wisconsin card sorting test dimensions in schizophrenia: Factorial, predictive, and divergent validity
Bell M, Greig T, Kaplan E, Bryson G. Wisconsin card sorting test dimensions in schizophrenia: Factorial, predictive, and divergent validity. Journal Of Clinical And Experimental Neuropsychology 1997, 19: 933-941. PMID: 9524888, DOI: 10.1080/01688639708403774.Peer-Reviewed Original Research
1994
Five-component model of schizophrenia: Assessing the factorial invariance of the positive and negative syndrome scale
Bell M, Lysaker P, Beam-Goulet J, Milstein R, Lindenmayer J. Five-component model of schizophrenia: Assessing the factorial invariance of the positive and negative syndrome scale. Psychiatry Research 1994, 52: 295-303. PMID: 7991723, DOI: 10.1016/0165-1781(94)90075-2.Peer-Reviewed Original Research