Wechsler ScalesIntelligenceIntelligence TestsLeukemia, Lymphocytic, Chronic, B-CellNeuropsychological TestsCognition DisordersCognitionChild DevelopmentVerbal BehaviorPrognosisMagnetic Resonance ImagingDevelopmental DisabilitiesPsychometricsPsychomotor PerformanceMalingeringIntellectual DisabilityLongitudinal StudiesMemory DisordersTask Performance and AnalysisEducational StatusMemoryFollow-Up StudiesInfant, NewbornCohort StudiesReproducibility of ResultsExecutive FunctionLinear ModelsAge FactorsPregnancySeverity of Illness IndexAttentionLeadLanguage TestsBender-Gestalt TestPsychiatric Status Rating ScalesAnalysis of VarianceRisk FactorsMental RecallProspective StudiesLearning DisordersTime FactorsMotor SkillsQuestionnairesTreatment OutcomeVerbal LearningPsychological TestsReaction TimePredictive Value of TestsBrain Damage, ChronicSocioeconomic FactorsBrainSchizophreniaMemory, Short-TermSchizophrenic PsychologySensitivity and SpecificityAthletic Performance