Research Topics
| Robyn LangdonSummaryAffiliation: Macquarie University Country: Australia Publications
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Publications
Delusion and confabulation: overlapping or distinct distortions of reality?Robyn Langdon
Macquarie Centre for Cognitive Science, Macquarie University, Ryde, NSW 2109, Australia
Cogn Neuropsychiatry 15:1-13. 2010..After introducing each contribution, we highlight some common themes and unanswered questions...
Pathological and non-pathological factors in delusional misbeliefRobyn Langdon
Macquarie Centre for Cognitive Science, Macquarie University, Sydney, NSW 2109, Australia http www maccs mq edu au members profile html memberID 60
Behav Brain Sci 32:527-8. 2009..Rather than discussing their argument, I consider how this shear-pin system might combine with both pathological belief-making ("culpable" breakdowns caused by neuropathy) and normal belief-making to explain a spectrum of delusions...
Reasoning anomalies associated with delusions in schizophreniaRobyn Langdon
Macquarie Centre for Cognitive Science, Macquarie University, NSW, Australia
Schizophr Bull 36:321-30. 2010....- The role of personal biases in the explanation of confabulationKasey Metcalf
Brain Injury Rehabilitation Unit, Liverpool Hospital, Liverpool, Sydney, NSW 1871, Australia
Cogn Neuropsychiatry 15:64-94. 2010..In particular the content of confabulation has been shown to contain a positive emotional bias. This study investigated the role of personal biases in the confabulations of six patients with diverse aetiologies... - Willed action in schizophreniaRobyn Langdon
Macquarie Centre for Cognitive Science, Macquarie University, NSW, Australia
Psychiatry Res 150:193-7. 2007..That the patients with marked negative symptoms performed best when their actions were more stimulus-driven than willed strengthens the case that negative schizophrenic symptoms reflect a disorder of willed action... - Neuropsychological characteristics associated with olfactory hallucinations in schizophreniaDeborah Arguedas
Psychology Department, Macquarie University, Sydney, New South Wales, Australia
J Int Neuropsychol Soc 18:799-808. 2012..Findings provide the first preliminary support for OH-specific neuropsychological impairments associated with OFC dysfunction in schizophrenia. (JINS, 2012, 18, 1-10)... - Clinical correlates of olfactory hallucinations in schizophreniaRobyn Langdon
Macquarie Centre for Cognitive Science, Macquarie University, Sydney, New South Wales, Australia
Br J Clin Psychol 50:145-63. 2011..OHs and hallucinations of taste, touch, and bodily sensation frequently co-occur. Self-smells warrant sensitive probing... - Jumping to delusions? Paranoia, probabilistic reasoning, and need for closureRyan McKay
Macquarie Centre for Cognitive Science, Macquarie University, Sydney, Australia
Cogn Neuropsychiatry 12:362-76. 2007..It was hypothesised that patients with a history of persecutory delusions would display higher need for closure and a more extreme jumping to conclusions bias than healthy control participants... - The defensive function of persecutory delusions: an investigation using the Implicit Association TestRyan McKay
Macquarie University, New South Wales, Australia
Cogn Neuropsychiatry 12:1-24. 2007..A central prediction of their model is that such delusions will be associated with discrepancies between overt and covert self-esteem... - Mirror agnosia and the mirrored-self misidentification delusion: a hypnotic analogueMichael H Connors
ARC Centre of Excellence in Cognition and its Disorders, Macquarie Centre for Cognitive Science, Macquarie University, Sydney, Australia
Cogn Neuropsychiatry 17:197-226. 2012..This study examined whether a hypnotic suggestion for mirror agnosia can recreate features of the delusion... - A stranger in the looking glass: developing and challenging a hypnotic mirrored-self misidentification delusionAmanda J Barnier
Macquarie University, Sydney, Australia
Int J Clin Exp Hypn 59:1-26. 2011..Findings are discussed in light of the dominant theory of delusions and highlight the advantages of using hypnosis to explore delusional beliefs... - Selective attention to threatening faces in delusion-prone individualsDeborah Arguedas
Macquarie University, Sydney, Australia
Cognit Neuropsychiatry 11:557-75. 2006..CONCLUSIONS: Results support the operation of emotion-selective engagement and defective disengagement for threat-related facial expressions (i.e., anger) in delusion-prone individuals... - Taking the perspective of the other contributes to awareness of illness in schizophreniaRobyn Langdon
Macquarie Centre for Cognitive Science, Macquarie University, Sydney, New South Wales, Australia
Schizophr Bull 35:1003-11. 2009..Findings also suggest that the nature of perspective-taking difficulty which disrupts insight in schizophrenia is best revealed using ToM tasks with "indirect" instructions... - Models of misbelief: Integrating motivational and deficit theories of delusionsRyan McKay
Macquarie Centre for Cognitive Science, Macquarie University, Australia School of Social Sciences and Liberal Studies, Charles Sturt University, Australia
Conscious Cogn 16:932-41. 2007..It is therefore concluded that the most comprehensive account of delusions will involve a theoretical unification of both motivational and deficit approaches... - Theory of mind in Williams syndrome assessed using a nonverbal taskMelanie A Porter
Macquarie Centre for Cognitive Science, Macquarie University, Sydney, NSW 2109, Australia
J Autism Dev Disord 38:806-14. 2008..amp; Coltheart, M. (2005). Cognitive heterogeneity in Williams syndrome. Developmental Neuropsychology, 27(2), 275-306... - Mirrored-self misidentification in the hypnosis laboratory: recreating the delusion from its component factorsMichael H Connors
ARC Centre of Excellence in Cognition and its Disorders, Macquarie Centre for Cognitive Science, Macquarie University, Sydney, Australia
Cogn Neuropsychiatry 17:151-76. 2012..This study gave participants separate hypnotic suggestions for these two factors to create a hypnotic analogue of the delusion... - Schizophrenia and monothematic delusionsMax Coltheart
Macquarie Centre for Cognitive Science, Macquarie University, Sydney, NSW 2109, Australia
Schizophr Bull 33:642-7. 2007..We propose that the 2-factor account of particular delusions like Capgras and Cotard still applies even when these delusions occur in the context of schizophrenia rather than occurring in isolation... - Schizotypal traits impact upon executive working memory and aspects of IQSandra Matheson
Department of Psychology, Macquarie University, Sydney NSW 2109, Australia
Psychiatry Res 159:207-14. 2008..g. inductive reasoning) might also be compromised in non-clinical schizotypy... - Delusion and confabulation: mistakes of perceiving, remembering and believingRobyn Langdon
Macquarie Centre for Cognitive Science, Macquarie University, Sydney, NSW 2109, Australia
Cogn Neuropsychiatry 15:319-45. 2010..Underlying both spontaneous confabulations and other received delusions, we propose, is an inability to inhibit the prepotent tendency to upload and maintain experiential content (mnemonic or perceptual) into belief... - A preliminary investigation of olfactory function in olfactory and auditory-verbal hallucinators with schizophrenia, and normal controlsRichard J Stevenson
Department of Psychology, Macquarie University, Australia
Cogn Neuropsychiatry 17:315-33. 2012..It is well established that people with schizophrenia have impaired olfactory perception. However, another olfactory abnormality that occurs in schizophrenia--olfactory hallucinations (OHs)--has received almost no attention... - Attentional orienting triggered by gaze in schizophreniaRobyn Langdon
Macquarie Centre for Cognitive Science, Macquarie University, NSW 2109, Australia
Neuropsychologia 44:417-29. 2006..Findings are discussed in light of recent neuroimaging work investigating the neural basis of social orienting and social cognition... - Developing hypnotic analogues of clinical delusions: mirrored-self misidentificationAmanda J Barnier
Macquarie Centre for Cognitive Science, Macquarie University, Sydney, Australia
Cogn Neuropsychiatry 13:406-30. 2008..However, hypnosis offers a technique for creating transient delusions that are resistant to challenge. The aim of this study was to develop an hypnotic analogue of one important delusion, mirrored-self misidentification... - Need for closure, jumping to conclusions, and decisiveness in delusion-prone individualsRyan McKay
Macquarie Centre for Cognitive Science, Macquarie University, Sydney, NSW, Australia
J Nerv Ment Dis 194:422-6. 2006..Delusion-proneness is associated independently with jumping-to-conclusions bias on experimental reasoning tasks, intolerance of ambiguity, and indecision concerning real-life dilemmas... - Models of confabulation: a critical review and a new frameworkKasey Metcalf
Macquarie Centre for Cognitive Science, Macquarie University, Sydney, NSW, Australia
Cogn Neuropsychol 24:23-47. 2007..This is an overarching framework that can be used to model confabulations, and it builds upon links between delusions and confabulation... - The persecutory ideation questionnaireRyan McKay
Macquarie Centre for Cognitive Science, Macquarie University, Sydney, Australia
J Nerv Ment Dis 194:628-31. 2006..Finally, the PIQ shared unique variance with severity of persecutory delusions in the clinical group, providing good criterion validity for the PIQ as a measure of specifically persecutory ideation, rather than paranoia in general... - The neuropsychological basis of hypersociability in Williams and Down syndromeMelanie A Porter
Macquarie Centre for Cognitive Science, Macquarie University, NSW 2109, Australia
Neuropsychologia 45:2839-49. 2007..In contrast, results from a battery of neuropsychological tasks suggested that abnormal social approach in WS and DS in everyday life is best explained by frontal lobe impairment, in particular, poor response inhibition... - Modeling erotomania delusion in the laboratory with hypnosisJillian E Attewell
Macquarie University, Sydney, Australia
Int J Clin Exp Hypn 60:1-30. 2012..These features are strikingly similar to clinical cases and highlight the value of using hypnosis to model clinical delusions. The authors also discuss some limitations of this approach... - Olfactory hallucinations in schizophrenia and schizoaffective disorder: a phenomenological surveyRichard J Stevenson
Department of Psychology, Macquarie University, Sydney, NSW2109, Australia
Psychiatry Res 185:321-7. 2011..Our data suggest diverse causes for OHs in schizophrenia, none of which are consistent with current models of hallucinations in other modalities... - Recognition of metaphor and irony in young adults: the impact of schizotypal personality traitsRobyn Langdon
Macquarie Centre for Cognitive Science, Macquarie University, Sydney, NSW 2109, Australia
Psychiatry Res 125:9-20. 2004.... - Repetition blindness for words yet repetition advantage for nonwordsVeronika Coltheart
Macquarie Centre for Cognitive Science, Division of Linguistics and Psychology, Macquarie University, New South Wales, Australia
J Exp Psychol Learn Mem Cogn 29:171-85. 2003..The findings suggest that for identical linguistic stimuli the types bound to episodic memory tokens that are vulnerable to repetition blindness are lexical units... - Delusional beliefMax Coltheart
Macquarie Center for Cognitive Science, Macquarie University, Sydney NSW Australia 2109
Annu Rev Psychol 62:271-98. 2011..Five difficulties confronting this two-factor account of monothematic delusion are then identified, and attempts are made to address each one... - An open clinical trial assessing a novel training program for social cognitive impairment in schizophreniaPamela Marsh
Postdoctoral Research Fellow, ARC Centre of Excellence in Cognition and its Disorders CCD, Macquarie University, Sydney, NSW, Australia
Australas Psychiatry 21:122-6. 2013..CONCLUSIONS SoCog-MSRT can improve ToM abilities and social understanding, but individuals with poorer working memory and lower premorbid IQ may be less able to benefit from this type of training... - Paranoia, persecutory delusions and attributional biasesRyan McKay
Macquarie Centre for Cognitive Science, Macquarie University, Sydney, NSW, 2109, Australia
Psychiatry Res 136:233-45. 2005..These results suggest that the putative link between persecutory ideation and attributional biases only manifests (if at all) when persecutory ideation is of delusional intensity, and that it is confined to a personalising bias... - Empathetic perspective-taking is impaired in schizophrenia: evidence from a study of emotion attribution and theory of mindRobyn Langdon
Macquarie University, South Western Sydney Area Health Service, Australia
Cogn Neuropsychiatry 11:133-55. 2006..e., beliefs and intentions and not emotions). This study examines whether the same holds true for schizophrenia... - The experience of altered states of consciousness in shamanic ritual: the role of pre-existing beliefs and affective factorsVince Polito
Macquarie Centre for Cognitive Science, Macquarie University, Sydney, NSW, Australia
Conscious Cogn 19:918-25. 2010..Our findings demonstrate that variation in an individual's characterisation of anomalous experiences is nuanced by pre-existing beliefs and affective factors... - Source monitoring and olfactory hallucinations in schizophreniaDeborah Arguedas
ARC Centre of Excellence in Cognition and Its Disorders and Macquarie Centre for Cognitive Science, Macquarie University, Sydney, NSW 2109, Australia
J Abnorm Psychol 121:936-43. 2012..These findings provide the first evidence of a source-monitoring impairment in schizophrenic participants with OHs and suggest that this impairment is modality specific... - Hyper-reactivity in fragile X syndrome females: Generalised or specific to socially-salient stimuli? A skin conductance studyTracey A Williams
ARC Centre of Excellence in Cognition and its Disorders, and Department of Cognitive Science, Macquarie University, NSW 2109, Australia ARC Centre of Excellence in Cognition and its Disorders, and Department of Psychology, Macquarie University, NSW 2109, Australia Electronic address
Int J Psychophysiol 88:26-34. 2013..These findings suggest that any hyper-reactivity observed in FXS may be more specific to socially salient stimuli, rather than generalised... - Externalizing and personalizing biases in persecutory delusions: the relationship with poor insight and theory-of-mindRobyn Langdon
Macquarie Centre for Cognitive Science, Macquarie University, Sydney, Australia
Behav Res Ther 44:699-713. 2006..Our findings indicate multiple pathways to poor insight, one of which is a theory-of-mind difficulty, impairing the capacity to simulate other perspectives for the purpose of critically evaluating one's own beliefs and circumstances...