Robyn Langdon

Summary

Affiliation: Macquarie University
Country: Australia

Publications

  1. doi request reprint 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
  2. ncbi request reprint Pathological and non-pathological factors in delusional misbelief
    Robyn 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
  3. pmc Reasoning anomalies associated with delusions in schizophrenia
    Robyn Langdon
    Macquarie Centre for Cognitive Science, Macquarie University, NSW, Australia
    Schizophr Bull 36:321-30. 2010
  4. doi request reprint The role of personal biases in the explanation of confabulation
    Kasey Metcalf
    Brain Injury Rehabilitation Unit, Liverpool Hospital, Liverpool, Sydney, NSW 1871, Australia
    Cogn Neuropsychiatry 15:64-94. 2010
  5. ncbi request reprint Jumping to delusions in early psychosis
    Robyn Langdon
    a ARC Centre of Excellence in Cognition and its Disorders and Department of Cognitive Science, Macquarie University, NSW 2109, Australia
    Cogn Neuropsychiatry 19:241-56. 2014
  6. ncbi request reprint Willed action in schizophrenia
    Robyn Langdon
    Macquarie Centre for Cognitive Science, Macquarie University, NSW, Australia
    Psychiatry Res 150:193-7. 2007
  7. ncbi request reprint Neuropsychological characteristics associated with olfactory hallucinations in schizophrenia
    Deborah Arguedas
    Psychology Department, Macquarie University, Sydney, New South Wales, Australia
    J Int Neuropsychol Soc 18:799-808. 2012
  8. doi request reprint Clinical correlates of olfactory hallucinations in schizophrenia
    Robyn Langdon
    Macquarie Centre for Cognitive Science, Macquarie University, Sydney, New South Wales, Australia
    Br J Clin Psychol 50:145-63. 2011
  9. ncbi request reprint Jumping to delusions? Paranoia, probabilistic reasoning, and need for closure
    Ryan McKay
    Macquarie Centre for Cognitive Science, Macquarie University, Sydney, Australia
    Cogn Neuropsychiatry 12:362-76. 2007
  10. ncbi request reprint Attributional biases, paranoia, and depression in early psychosis
    Robyn Langdon
    ARC Centre of Excellence in Cognition and its Disorders, and Department of Cognitive Science, Macquarie University, Sydney, New South Wales, Australia
    Br J Clin Psychol 52:408-23. 2013

Detail Information

Publications45

  1. doi request reprint 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...
  2. ncbi request reprint Pathological and non-pathological factors in delusional misbelief
    Robyn 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...
  3. pmc Reasoning anomalies associated with delusions in schizophrenia
    Robyn Langdon
    Macquarie Centre for Cognitive Science, Macquarie University, NSW, Australia
    Schizophr Bull 36:321-30. 2010
    ....
  4. doi request reprint The role of personal biases in the explanation of confabulation
    Kasey 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...
  5. ncbi request reprint Jumping to delusions in early psychosis
    Robyn Langdon
    a ARC Centre of Excellence in Cognition and its Disorders and Department of Cognitive Science, Macquarie University, NSW 2109, Australia
    Cogn Neuropsychiatry 19:241-56. 2014
    ..Previous studies have examined JTC bias across the delusion-prone continuum, but have not considered the co-occurrence of both biases at early stages of psychosis. This was our aim...
  6. ncbi request reprint Willed action in schizophrenia
    Robyn 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...
  7. ncbi request reprint Neuropsychological characteristics associated with olfactory hallucinations in schizophrenia
    Deborah 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)...
  8. doi request reprint Clinical correlates of olfactory hallucinations in schizophrenia
    Robyn 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...
  9. ncbi request reprint Jumping to delusions? Paranoia, probabilistic reasoning, and need for closure
    Ryan 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...
  10. ncbi request reprint Attributional biases, paranoia, and depression in early psychosis
    Robyn Langdon
    ARC Centre of Excellence in Cognition and its Disorders, and Department of Cognitive Science, Macquarie University, Sydney, New South Wales, Australia
    Br J Clin Psychol 52:408-23. 2013
    ..However, most research to date has only examined attributional biases in chronic patients. We examined attributional style, paranoia, and depression in early psychosis patients to assess the primacy of attributional biases in psychosis...
  11. ncbi request reprint The defensive function of persecutory delusions: an investigation using the Implicit Association Test
    Ryan 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...
  12. doi request reprint Viewing social scenes: a visual scan-path study comparing fragile X syndrome and Williams syndrome
    Tracey A Williams
    Department of Cognitive Science, ARC Centre of Excellence in Cognition and its Disorders, Macquarie University, Sydney, NSW, 2109, Australia
    J Autism Dev Disord 43:1880-94. 2013
    ..These findings are discussed in relation to the distinct social phenotypes of these two disorders. ..
  13. ncbi request reprint A laboratory analogue of mirrored-self misidentification delusion: the role of hypnosis, suggestion, and demand characteristics
    Michael H Connors
    ARC Centre of Excellence in Cognition and its Disorders, Australia Department of Cognitive Science, Macquarie University, Sydney, Australia Electronic address
    Conscious Cogn 22:1510-22. 2013
    ..Overall, results from both experiments confirm that we can use hypnotic suggestion to produce a compelling analogue of mirrored-self misidentification that cannot simply be attributed to social cues or role-playing. ..
  14. doi request reprint Mirror agnosia and the mirrored-self misidentification delusion: a hypnotic analogue
    Michael 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...
  15. doi request reprint A stranger in the looking glass: developing and challenging a hypnotic mirrored-self misidentification delusion
    Amanda 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...
  16. pmc Taking the perspective of the other contributes to awareness of illness in schizophrenia
    Robyn 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...
  17. ncbi request reprint Theory of mind in Williams syndrome assessed using a nonverbal task
    Melanie 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...
  18. ncbi request reprint Models of misbelief: Integrating motivational and deficit theories of delusions
    Ryan 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...
  19. ncbi request reprint Selective attention to threatening faces in delusion-prone individuals
    Deborah Arguedas
    Macquarie University, Sydney, Australia
    Cogn Neuropsychiatry 11:557-75. 2006
    ..The present study examined which of these processes operate in nonclinical delusion-prone individuals...
  20. ncbi request reprint Folie à deux homicide and the two-factor model of delusions
    Olav Nielssen
    a Clinical Research Unit for Anxiety and Depression, St Vincent s Hospital, Sydney, Australia
    Cogn Neuropsychiatry 18:390-408. 2013
    ..In this paper, we apply the "two-factor" model of delusions to a series of cases of folie à deux resulting in homicide...
  21. doi request reprint Source monitoring and olfactory hallucinations in schizophrenia
    Deborah 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...
  22. doi request reprint An open clinical trial assessing a novel training program for social cognitive impairment in schizophrenia
    Pamela Marsh
    ARC Centre of Excellence in Cognition and its Disorders, Macquarie University, Sydney, NSW, Australia
    Australas Psychiatry 21:122-6. 2013
    ..Training comprised 10 twice-weekly sessions, for 5 weeks, with a pre- and post-training assessment...
  23. doi request reprint Mirrored-self misidentification in the hypnosis laboratory: recreating the delusion from its component factors
    Michael 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...
  24. pmc Schizophrenia and monothematic delusions
    Max 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...
  25. doi request reprint Delusion and confabulation: mistakes of perceiving, remembering and believing
    Robyn 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...
  26. doi request reprint Schizotypal traits impact upon executive working memory and aspects of IQ
    Sandra 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...
  27. doi request reprint A preliminary investigation of olfactory function in olfactory and auditory-verbal hallucinators with schizophrenia, and normal controls
    Richard 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...
  28. ncbi request reprint Need for closure, jumping to conclusions, and decisiveness in delusion-prone individuals
    Ryan 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...
  29. ncbi request reprint The persecutory ideation questionnaire
    Ryan 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...
  30. doi request reprint Developing hypnotic analogues of clinical delusions: mirrored-self misidentification
    Amanda 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...
  31. doi request reprint Models of confabulation: a critical review and a new framework
    Kasey 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...
  32. ncbi request reprint The neuropsychological basis of hypersociability in Williams and Down syndrome
    Melanie 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...
  33. ncbi request reprint Attentional orienting triggered by gaze in schizophrenia
    Robyn 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...
  34. doi request reprint Hyper-reactivity in fragile X syndrome females: generalised or specific to socially-salient stimuli? A skin conductance study
    Tracey A Williams
    ARC Centre of Excellence in Cognition and its Disorders, and Department of Cognitive Science, Macquarie University, NSW 2109, Australia
    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...
  35. doi request reprint Modeling erotomania delusion in the laboratory with hypnosis
    Jillian 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...
  36. doi request reprint Olfactory hallucinations in schizophrenia and schizoaffective disorder: a phenomenological survey
    Richard 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...
  37. ncbi request reprint Recognition of metaphor and irony in young adults: the impact of schizotypal personality traits
    Robyn Langdon
    Macquarie Centre for Cognitive Science, Macquarie University, Sydney, NSW 2109, Australia
    Psychiatry Res 125:9-20. 2004
    ....
  38. ncbi request reprint Repetition blindness for words yet repetition advantage for nonwords
    Veronika 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...
  39. doi request reprint Delusional belief
    Max 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...
  40. doi request reprint Delusion proneness in nonclinical individuals and cognitive insight: the contributions of rumination and reflection
    Traci Carse
    Department of Psychology, Macquarie University, Sydney, New South Wales, Australia
    J Nerv Ment Dis 201:659-64. 2013
    ..These findings suggest that the previously observed positive relation between BCIS self-reflection and nonclinical delusion proneness might be driven, in part, by the ruminative aspect of self-reflection. ..
  41. ncbi request reprint Paranoia, persecutory delusions and attributional biases
    Ryan 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...
  42. ncbi request reprint Empathetic perspective-taking is impaired in schizophrenia: evidence from a study of emotion attribution and theory of mind
    Robyn 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...
  43. doi request reprint The experience of altered states of consciousness in shamanic ritual: the role of pre-existing beliefs and affective factors
    Vince 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...
  44. ncbi request reprint Delusions and prediction error: re-examining the behavioural evidence for disrupted error signalling in delusion formation
    Oren Griffiths
    a School of Psychology, University of NSW, Anzac Pde, Kensigton, Sydney, NSW 2052, Australia
    Cogn Neuropsychiatry 19:439-67. 2014
    ..There has also been significant theorizing and experimentation concerning the remaining link in this triad, namely that deviant prediction error signalling produces or maintains psychotic symptoms...
  45. ncbi request reprint Externalizing and personalizing biases in persecutory delusions: the relationship with poor insight and theory-of-mind
    Robyn 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...