2024
Disentangling negative and positive symptoms in schizophrenia and autism spectrum disorder
Corbera S, Wexler B, Bell M, Pittman B, Pelphrey K, Pearlson G, Assaf M. Disentangling negative and positive symptoms in schizophrenia and autism spectrum disorder. Schizophrenia Research 2024, 271: 1-8. PMID: 39002525, PMCID: PMC11384336, DOI: 10.1016/j.schres.2024.07.002.Peer-Reviewed Original ResearchAutism spectrum disorderPositive and Negative Syndrome ScaleAutism Diagnostic Observation Schedule-GenericExperiential negative symptomsPositive symptomsNegative symptomsExploratory factor analysisSpectrum disorderNegative Syndrome ScaleTarget negative symptomsSyndrome ScaleDiscriminant function analysisSZ relativesAssociated with quality of lifeSchizophreniaSocial skillsSocial functioningDiagnostic classificationAutismFactor analysisAssociated with qualityPredictor of diagnosisSymptomsDisordersQuality of lifeWork Performance and Its Clinical Correlates in Patients With Chronic Mental Illness: The Chinese Version of Vocational Cognitive Rating Scale and the Work Behavior Inventory
Wang Y, Liu C, Chen K, Wu Y, Yen Y, Bell M, Chien Y. Work Performance and Its Clinical Correlates in Patients With Chronic Mental Illness: The Chinese Version of Vocational Cognitive Rating Scale and the Work Behavior Inventory. Psychiatric Rehabilitation Journal 2024, 47: 81-90. PMID: 37956062, DOI: 10.1037/prj0000590.Peer-Reviewed Original ResearchWork Behavior InventoryClinical correlatesCognitive Rating ScaleComprehensive Occupational Therapy Evaluation ScaleAffective symptomsMental illnessNegative symptomsRating ScaleGreater affective symptomsChronic mental illnessSevere mental illnessPersonalized rehabilitation programsChinese versionNegative Syndrome ScalePsychometric propertiesGood convergent validityTest-retest reliabilityClinical trialsChronic patientsRehabilitation programFunction assessmentSyndrome ScaleBehavior InventoryOccupational functionSymptoms
2023
Efficacy of social cognition and interaction training in outpatients with schizophrenia spectrum disorders: randomized controlled trial
Fiszdon J, Dixon H, Davidson C, Roberts D, Penn D, Bell M. Efficacy of social cognition and interaction training in outpatients with schizophrenia spectrum disorders: randomized controlled trial. Frontiers In Psychiatry 2023, 14: 1217735. PMID: 37599886, PMCID: PMC10436290, DOI: 10.3389/fpsyt.2023.1217735.Peer-Reviewed Original ResearchSocial cognitionInteraction trainingSocial cognitive interventionsPotential treatment moderatorsSchizophrenia spectrum disordersCognitive interventionsBaseline neurocognitionManualized interventionSpectrum disorderTreatment moderatorsPotential moderatorsSocial functioningNeurocognitionCognitionModeratorFunctioningCurrent trialMedium effectsTrainingRole functionInterventionTreatment effectsMeasure selectionSymptomsWLC
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
Clinical Benefits of Paid Work Activity in Schizophrenia: 1-year Followup
Bell M, Lysaker P. Clinical Benefits of Paid Work Activity in Schizophrenia: 1-year Followup. Schizophrenia Bulletin 1997, 23: 317-328. PMID: 9165640, DOI: 10.1093/schbul/23.2.317.Peer-Reviewed Original ResearchConceptsVeterans Affairs Medical CenterLower rehospitalization ratesPercent of participantsClinical improvementRehospitalization ratesClinical outcomesClinical benefitTotal symptomsMedical CenterRehabilitative outcomesSchizoaffective disorderFollowupPositive symptomsClinical interventionsLimitations of workSymptomsSignificant decreaseSchizophreniaPay subjectsRehabilitative effectsWork activitiesGreater improvementSubjectsMonthsMore hours
1995
Social Skills at Work
LYSAKER P, BELL M, ZITO W, BIOTY S. Social Skills at Work. The Journal Of Nervous And Mental Disease 1995, 183: 688-692. PMID: 7595430, DOI: 10.1097/00005053-199511000-00003.Peer-Reviewed Original ResearchConceptsCognitive impairmentNegative symptomsWeeks of rehabilitationSupportive group treatmentVocational rehabilitation programRehabilitation programNeuropsychological testingSymptom levelsGroup treatmentPatientsMultiple regression analysisRegression analysisSymptomsSchizophreniaImpairmentDeficitsSubjectsRehabilitationPoor social skillsSocial deficitsSocial skillsHigh levelsLevelsIntakeWeeksWork and Meaning: Disturbance of Volition and Vocational Dysfunction in Schizophrenia
Lysaker P, Bell M. Work and Meaning: Disturbance of Volition and Vocational Dysfunction in Schizophrenia. Psychiatry 1995, 58: 392-400. PMID: 8746495, DOI: 10.1080/00332747.1995.11024743.Peer-Reviewed Original ResearchConceptsDisturbance of volitionWork rehabilitation programDiagnosis of schizophreniaPsychiatric illnessVocational dysfunctionParanoid typeRehabilitation programDeficit syndromeIllnessPersistent inabilityPervasive symptomSchizophreniaWhite malesCurrent nosologySymptomsDisabilityLack of knowledgeLack of motivationPsychiatric symptoms and work performance among persons with severe mental illness
Bell M, Lysaker P. Psychiatric symptoms and work performance among persons with severe mental illness. Psychiatric Services 1995, 46: 508-510. PMID: 7627681, DOI: 10.1176/ps.46.5.508.Peer-Reviewed Original ResearchConceptsRatings of symptomsPsychiatric symptomsSevere mental illnessWork rehabilitation programNegative Syndrome ScaleWork Personality ProfileWork performanceRehabilitation programSchizoaffective disorderSyndrome ScaleMental illnessSymptomsSymptom componentsPowerful predictorHostility componentWeeksPositive componentPersonality profilesThe frequency of associations between positive and negative symptoms and dysphoria in schizophrenia
Lysaker P, Bell M, Bioty S, Zito W. The frequency of associations between positive and negative symptoms and dysphoria in schizophrenia. Comprehensive Psychiatry 1995, 36: 113-117. PMID: 7758296, DOI: 10.1016/s0010-440x(95)90105-1.Peer-Reviewed Original Research
1994
Relationship of Positive and Negative Symptoms to Cocaine Abuse in Schizophrenia
LYSAKER P, BELL M, BEAM-GOULET J, MILSTEIN R. Relationship of Positive and Negative Symptoms to Cocaine Abuse in Schizophrenia. The Journal Of Nervous And Mental Disease 1994, 182: 109-112. PMID: 8308528, DOI: 10.1097/00005053-199402000-00008.Peer-Reviewed Original ResearchConceptsCocaine-abusing subjectsNegative Syndrome ScaleCocaine abuseNegative symptomsParanoid subtypeSyndrome ScaleSubstance abuseMore frequent hospitalizationsFirst psychiatric hospitalizationLifetime substance abuseSevere negative symptomsSubstance abuse historyFrequent hospitalizationsPsychiatric hospitalizationAlcohol abusePositive symptomsMultivariate analysisSymptomsPatientsHospitalizationSignificant differencesSubtypesDiagnosisSchizophreniaMonths