2012
The course of cognitive functioning over six months in individuals at clinical high risk for psychosis
Barbato M, Colijn MA, Keefe RS, Perkins DO, Woods SW, Hawkins KA, Christensen BK, Addington J. The course of cognitive functioning over six months in individuals at clinical high risk for psychosis. Psychiatry Research 2012, 206: 195-199. PMID: 23159196, PMCID: PMC3600156, DOI: 10.1016/j.psychres.2012.10.013.Peer-Reviewed Original ResearchConceptsClinical high riskCHR individualsComprehensive cognitive test batteryCognitive test batteryCognitive impairmentFuture longitudinal researchCognitive functioningCognitive performanceCognitive testsTest batteryLongitudinal researchCognitionPoor performanceLongitudinal changesPsychosisIndividualsParticipantsImpairmentBaseline participantsFunctioningPerformanceBatteriesResearchProdrome
2008
Neuropsychological course in the prodrome and first episode of psychosis: Findings from the PRIME North America Double Blind Treatment Study
Hawkins KA, Keefe RS, Christensen BK, Addington J, Woods SW, Callahan J, Zipursky RB, Perkins DO, Tohen M, Breier A, McGlashan TH. Neuropsychological course in the prodrome and first episode of psychosis: Findings from the PRIME North America Double Blind Treatment Study. Schizophrenia Research 2008, 105: 1-9. PMID: 18774696, DOI: 10.1016/j.schres.2008.07.008.Peer-Reviewed Original ResearchConceptsNeuropsychological courseDouble-blind treatment studyNeuropsychological StatusPlacebo-assigned subjectsPutative prodromal stateDouble-blind trialFrank psychotic episodeEarly convertersOlanzapine treatmentNeuropsychological deficienciesFrank psychosisMedication studiesFirst episodePsychotic episodeProdromal stateHigh riskBlind trialNeuropsychological declineTreatment studiesPsychotic conditionsPsychosisLate convertersOlanzapineProdromeInitial assessment
2004
Neuropsychological status of subjects at high risk for a first episode of psychosis
Hawkins KA, Addington J, Keefe RS, Christensen B, Perkins DO, Zipurksy R, Woods SW, Miller TJ, Marquez E, Breier A, McGlashan TH. Neuropsychological status of subjects at high risk for a first episode of psychosis. Schizophrenia Research 2004, 67: 115-122. PMID: 14984870, DOI: 10.1016/j.schres.2003.08.007.Peer-Reviewed Original ResearchConceptsFirst episodeFirst psychotic episodeLevel of impairmentSchizophrenia prodromePsychotic episodeHigh riskMulti-site studyProdromal interventionPopulation normsNeuropsychological examNeuropsychological StatusNeuropsychological functioningNormal intelligenceEpisodesSchizophrenia samplePsychosisSubjectsRiskStatusProdromeSchizophreniaImpairmentSeverity