2023
Relationships between cognitive biases, decision-making, and delusions
Sheffield J, Smith R, Suthaharan P, Leptourgos P, Corlett P. Relationships between cognitive biases, decision-making, and delusions. Scientific Reports 2023, 13: 9485. PMID: 37301915, PMCID: PMC10257713, DOI: 10.1038/s41598-023-36526-1.Peer-Reviewed Original ResearchConceptsDelusional ideationDelusional thinkingCognitive biasesDistinct cognitive processesSelf-reported dataCognitive processesProbabilistic reversalUnique varianceComputational mechanismsEvidence integrationPsychosis spectrumMultiple measuresProportion of varianceParanoiaRandom explorationIdeationThinkingTaskBiasesMeasuresVarianceDelusionsJTCIndependent studiesRelationship
2022
Belief Updating and Paranoia in Individuals With Schizophrenia
Sheffield JM, Suthaharan P, Leptourgos P, Corlett PR. Belief Updating and Paranoia in Individuals With Schizophrenia. Biological Psychiatry Cognitive Neuroscience And Neuroimaging 2022, 7: 1149-1157. PMID: 35430406, PMCID: PMC9827723, DOI: 10.1016/j.bpsc.2022.03.013.Peer-Reviewed Original ResearchConceptsBelief updatingThought contentPersecutory delusionsUnusual thought contentHierarchical Gaussian FilterMeasures of anxietyPrior beliefsSignificant indirect effectHealthy control participantsCognitive mechanismsProbabilistic reversalPersecutory beliefsParanoia continuumWorry QuestionnaireNegative Syndrome ScaleControl participantsParanoiaModel implicatingIndirect effectsSymptom Rating ScaleSyndrome ScaleWorryBeliefsSchizophreniaSignificant worry