2023
Psychometric Properties of the Self-Injurious Thoughts and Behaviors Interview–Short Form Among U.S. Active Duty Military Service Members and Veterans
Stanley I, Marx B, Fina B, Young-McCaughan S, Tyler H, Sloan D, Blankenship A, Dondanville K, Walker J, Boffa J, Bryan C, Brown L, Straud C, Mintz J, Abdallah C, Back S, Blount T, DeBeer B, Flanagan J, Foa E, Fox P, Fredman S, Krystal J, McDevitt-Murphy M, McGeary D, Pruiksma K, Resick P, Roache J, Shiroma P, Taylor D, Wachen J, Kaplan A, López-Roca A, Nicholson K, Schobitz R, Schrader C, Sharrieff A, Yarvis J, Litz B, Keane T, Peterson A. Psychometric Properties of the Self-Injurious Thoughts and Behaviors Interview–Short Form Among U.S. Active Duty Military Service Members and Veterans. Assessment 2023, 30: 2332-2346. PMID: 36644835, DOI: 10.1177/10731911221143979.Peer-Reviewed Original ResearchConceptsBehaviors Interview-Short FormPosttraumatic stress disorderSelf-injurious thoughtsMilitary service membersService membersDiscriminant validitySelf-report measuresInterview-based measuresSuicidal ideationSelf-report questionnairesActive duty military service membersSuicide-related thoughtsActive duty service membersPTSD symptomsStress disorderRelated constructsGood convergentConvergent validityResponse formatPsychometric propertiesSuicide risk assessmentInterrater reliabilityHigh interrater reliabilityIdeationVeterans
2014
Preliminary analysis of positive and negative syndrome scale in ketamine-associated psychosis in comparison with schizophrenia
Xu K, Krystal JH, Ning Y, Chen da C, He H, Wang D, Ke X, Zhang X, Ding Y, Liu Y, Gueorguieva R, Wang Z, Limoncelli D, Pietrzak RH, Petrakis IL, Zhang X, Fan N. Preliminary analysis of positive and negative syndrome scale in ketamine-associated psychosis in comparison with schizophrenia. Journal Of Psychiatric Research 2014, 61: 64-72. PMID: 25560772, PMCID: PMC4445679, DOI: 10.1016/j.jpsychires.2014.12.012.Peer-Reviewed Original ResearchConceptsKetamine groupNegative Syndrome ScaleSchizophrenia groupSyndrome ScaleN-methyl-D-aspartate (NMDA) glutamate receptor antagonistGlutamate receptor antagonistsPotential confounding factorsEarly course schizophreniaSymptom dimensionsSymptoms of schizophreniaReceptor antagonistChronic schizophreniaHealthy subjectsKetamine abuseSchizophrenia psychosisSchizophrenia patientsConfounding factorsSymptom severitySymptomsInpatientsSchizophreniaPsychosisKetamine usersDissociation symptomsPrincipal component factor analysisPsychometrically Improved, Abbreviated Versions of Three Classic Measures of Impulsivity and Self-Control
Morean ME, DeMartini KS, Leeman RF, Pearlson GD, Anticevic A, Krishnan-Sarin S, Krystal JH, O’Malley S. Psychometrically Improved, Abbreviated Versions of Three Classic Measures of Impulsivity and Self-Control. Psychological Assessment 2014, 26: 1003-1020. PMID: 24885848, PMCID: PMC4152397, DOI: 10.1037/pas0000003.Peer-Reviewed Original ResearchConceptsBrief Self-Control ScaleSelf-reported impulsivityBIS/BASTest-criterion relationshipsFactor structureImpulsivity measuresMeasurement invarianceSelf-report impulsivity measuresBarratt Impulsiveness Scale-11Self-Control ScaleScalar measurement invarianceLatent factor structureGood scale propertiesComprehensive psychometric evaluationReplicable factor structureDrinking/smokingConfirmatory factor analysisAbbreviated versionAlternative factor structuresBehavioral inhibitionActivation ScalesSelf-ControlBIS-11Substance use researchSmoking outcomesSymptom structure and severity: A comparison of responses to the positive and negative syndrome scale (PANSS) between patients with PTSD or schizophrenia
Stefanovics EA, Krystal JH, Rosenheck RA. Symptom structure and severity: A comparison of responses to the positive and negative syndrome scale (PANSS) between patients with PTSD or schizophrenia. Comprehensive Psychiatry 2014, 55: 887-895. PMID: 24602497, DOI: 10.1016/j.comppsych.2014.01.014.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overAntipsychotic AgentsChronic DiseaseCombat DisordersDiagnosis, DifferentialDouble-Blind MethodFemaleHumansMaleMiddle AgedPsychiatric Status Rating ScalesPsychometricsRisperidoneSchizophreniaSchizophrenic PsychologyStress Disorders, Post-TraumaticVeteransYoung AdultConceptsPost-traumatic stress disorderNegative Syndrome ScaleSyndrome ScalePTSD samplePlacebo-controlled trialPsychosis-related factorsClinical trial patientsClinical Antipsychotic TrialsT-testSchizophrenia sampleExploratory factor analysisSymptoms of schizophreniaMilitary-related post-traumatic stress disorderSymptom structureAdjunctive risperidoneTrial patientsTraumatic Stress DisorderAntipsychotic TrialsSecondary data analysisSevere symptomsIndependent factorsDepressive factorsPatientsSymptom ratingsStress disorder
2011
The antidepressant effect of ketamine is not associated with changes in occipital amino acid neurotransmitter content as measured by [1H]-MRS
Valentine GW, Mason GF, Gomez R, Fasula M, Watzl J, Pittman B, Krystal JH, Sanacora G. The antidepressant effect of ketamine is not associated with changes in occipital amino acid neurotransmitter content as measured by [1H]-MRS. Psychiatry Research 2011, 191: 122-127. PMID: 21232924, PMCID: PMC3061550, DOI: 10.1016/j.pscychresns.2010.10.009.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAntidepressive AgentsBlood PressureDepressive Disorder, MajorDissociative DisordersFemaleGamma-Aminobutyric AcidGlutamic AcidHeart RateHumansKetamineMagnetic Resonance SpectroscopyMaleMiddle AgedOccipital LobeProtonsPsychiatric Status Rating ScalesPsychometricsRetrospective StudiesSingle-Blind MethodStatistics as TopicTime FactorsYoung AdultConceptsMajor depressive disorderAntidepressant effectsAntidepressant actionNeurotransmitter contentNMDA receptor antagonist ketamineProton magnetic resonance spectroscopy methodConventional antidepressant treatmentKetamine's antidepressant actionSingle intravenous doseSingle-blind conditionsAntidepressant treatmentChronic treatmentKetamine infusionIntravenous dosePharmacodynamic basisDepressive disorderAcute actionsMRS scansOccipital cortexDepressive symptomsDepression scoresRating ScaleBaseline measuresInfusionKetamine
2010
Clinical significance of neurological soft signs in schizophrenia: Factor analysis of the Neurological Evaluation Scale
Sewell RA, Perry EB, Karper LP, Bell MD, Lysaker P, Goulet JL, Brenner L, Erdos J, d'Souza DC, Seibyl JP, Krystal JH. Clinical significance of neurological soft signs in schizophrenia: Factor analysis of the Neurological Evaluation Scale. Schizophrenia Research 2010, 124: 1-12. PMID: 20855185, DOI: 10.1016/j.schres.2010.08.036.Peer-Reviewed Original ResearchConceptsNeurological Evaluation ScaleAbnormal Involuntary Movement ScaleDigit Symbol Substitution TaskWisconsin Card Sorting TestNeurologic deficitsClinical significanceExtrapyramidal Symptom Rating ScaleMore extrapyramidal symptomsBarnes Akathisia ScaleDetailed clinical assessmentNeurological soft signsSymptom Rating ScaleNegative Syndrome ScaleHigher AIMS scoresEvaluation ScaleNeurological deficitsExtrapyramidal symptomsClinical correlatesDeficit syndrome schizophreniaClinical evaluationClinical assessmentAIMS scoresLower PANSSMovement ScaleSoft signs
2009
Dimensional predictors of response to SRI pharmacotherapy in obsessive–compulsive disorder
Landeros-Weisenberger A, Bloch MH, Kelmendi B, Wegner R, Nudel J, Dombrowski P, Pittenger C, Krystal JH, Goodman WK, Leckman JF, Coric V. Dimensional predictors of response to SRI pharmacotherapy in obsessive–compulsive disorder. Journal Of Affective Disorders 2009, 121: 175-179. PMID: 19577308, PMCID: PMC3974618, DOI: 10.1016/j.jad.2009.06.010.Peer-Reviewed Original ResearchConceptsObsessive-compulsive disorderSRI responseSymptom dimensionsOpen-label continuation phaseClinical Global Improvement ScaleGlobal Improvement ScaleCentral serotonin systemInitial positive responseYale-Brown ObsessiveContinuation phaseMinor symptomsOrdinal logistic regressionClinical trialsSerotonin systemTreatment responseSame patientImprovement ScaleSRI treatmentPatientsSignificant associationLogistic regressionCompulsive ScaleOCD patientsOCD subjectsSymptoms
2004
The Psychotomimetic Effects of Intravenous Delta-9-Tetrahydrocannabinol in Healthy Individuals: Implications for Psychosis
D'Souza DC, Perry E, MacDougall L, Ammerman Y, Cooper T, Wu YT, Braley G, Gueorguieva R, Krystal JH. The Psychotomimetic Effects of Intravenous Delta-9-Tetrahydrocannabinol in Healthy Individuals: Implications for Psychosis. Neuropsychopharmacology 2004, 29: 1558-1572. PMID: 15173844, DOI: 10.1038/sj.npp.1300496.Peer-Reviewed Original ResearchMeSH KeywordsAdultAnxietyArousalAttentionBehaviorCognitionDose-Response Relationship, DrugDouble-Blind MethodDronabinolFemaleHallucinogensHemodynamicsHumansHydrocortisoneInjections, IntravenousMaleMemory, Short-TermMental RecallPanicProlactinPsychiatric Status Rating ScalesPsychometricsPsychoses, Substance-InducedSpeechVerbal LearningConceptsCannabinoid receptor functionWord recallRecognition recallVerbal fluencyCognitive deficitsProspective safety dataNegative symptomsAbuse disordersHealthy individualsCounterbalanced studyMonths poststudyRecallPsychotomimetic effectsPsychotic disordersReceptor functionPsychosisEndogenous psychosesIndividualsDistractibilityFluencyTransient symptomsDisordersEndocrine effectsSafety dataAnxiety
1998
Measurement of dissociative states with the Clinician‐Administered Dissociative States Scale (CADSS)
Bremner J, Krystal J, Putnam F, Southwick S, Marmar C, Charney D, Mazure C. Measurement of dissociative states with the Clinician‐Administered Dissociative States Scale (CADSS). Journal Of Traumatic Stress 1998, 11: 125-136. PMID: 9479681, DOI: 10.1023/a:1024465317902.Peer-Reviewed Original Research
1991
Characteristics of panic attack subtypes: Assessment of spontaneous panic, situational panic, sleep panic, and limited symptom attacks
Krystal J, Woods S, Hill C, Charney D. Characteristics of panic attack subtypes: Assessment of spontaneous panic, situational panic, sleep panic, and limited symptom attacks. Comprehensive Psychiatry 1991, 32: 474-480. PMID: 1778074, DOI: 10.1016/0010-440x(91)90026-9.Peer-Reviewed Original ResearchConceptsNumber of symptomsPanic attacksLimited symptom attacksDSM-IIIPanic attack subtypesDSM-III criteriaSpontaneous panic attacksSleep panicSpontaneous panicPanic disorderAwake stateDiagnostic significanceSymptomsPanic attack severityWeekly frequencyAttack severitySubtypesDescriptive characteristicsSeverity