Do you see what I see? Interpretations of intentional movement in schizophrenia

Russell, Tamara A.; Reynaud, Emanuelle; Herba, Catherine; Morris, Robin; Corcoran, Rhiannon

doi:10.1016/j.schres.2005.10.002

« Previous Next »Schizophrenia Research
Volume 81, Issue 1 , Pages 101-111, 1 January 2006

Do you see what I see? Interpretations of intentional movement in schizophrenia☆

Tamara A. Russell
- Section of Neuroscience and Emotion, Institute of Psychiatry, London, UK
- Neuroscience Institute of Schizophrenia and Allied Disorders Fellow/Macquarie Centre for Cognitive Sciences, Sydney, Australia
- Corresponding author. Section of Neuroscience and Emotion, PO Box 69, Institute of Psychiatry, DeCrespigny Park, London SE5 8AF, UK. Tel.: +44 207 848 0228; fax: +44 207 848 0379.
Emanuelle Reynaud
- Brain Image Analysis Unit, Institute of Psychiatry, London, UK
- Laboratoire Etude des Mécanismes Cognitifs UMR CNRS 5596, Bron, France
Catherine Herba
- Section of Neuroscience and Emotion, Institute of Psychiatry, London, UK
Robin Morris
- Psychology Department, Institute of Psychiatry, London, UK
Rhiannon Corcoran
- Psychology Department, Manchester University, UK

Received 15 October 2004; received in revised form 29 September 2005; accepted 4 October 2005.

Abstract

Objective

Current literature exploring theory of mind (ToM) abilities in patients with schizophrenia has failed to take into account the dynamic nature of complex social interactions. The aim of this study was to explore symptom specific impairments in theory of mind using a novel, dynamic task.

Methods

Subjects viewed short animations displaying three types of movement; random, goal directed, and socially complex (theory of mind). Verbal descriptions of the animations were obtained from 61 patients with schizophrenia (divided into symptom sub-groups) and 22 healthy comparison subjects and were scored for accuracy, type of response and use of target terms (terms most appropriate to each animation type).

Results

Accuracy on all three conditions discriminated behavioural signs (BS), and (to a lesser degree) paranoid subjects, from the other schizophrenia sub-groups (those in remission and those with passivity features) and the controls. Paranoid and BS groups had difficulties with all the animations, yet all symptom sub-groups failed to use the appropriate mentalising language to describe the ToM animations.

Conclusions

In this first exploration of on-line mentalising abilities in schizophrenia, it is suggested that a failure to use appropriate mentalising language may be a trait marker for the disease. The nature of the type of tasks used to assess social cognitive processing in this group needs careful consideration, and tasks tapping into the fluidity of social interactions yield results that differ from previously reported studies.

Keywords: Theory of mind, Social cognition, On-line mentalising