Simulated thought insertion: Influencing the sense of agency using deception and magic |
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| Institution: | 1. Department of Psychiatry, 1033 Pine Avenue West, McGill University, Montreal, QC H3A 1A1, Canada;2. Integrated Program in Neuroscience, Montreal Neurological Institute, 3801 University Street, Room 141, Montreal, QC H3A 2B4, Canada;3. Sciences, Normes, Décision, Université Paris–Sorbonne, Maison de la recherche, 28 rue Serpente, Bureau SE 06, 75006 Paris, France;4. The Lady Davis Institute at the SMDB Jewish General Hospital, Montreal, QC, Canada;1. Dresden Leibniz Graduate School (DLGS), Germany;2. Leibniz Institute of Ecological Urban and Regional Development (IOER), Germany;3. Faculty of Environmental Sciences, Technische Universität Dresden, Germany;1. Institute of Cognitive Neuroscience, University College London (UCL), United Kingdom;2. Human Informatics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Japan;3. Automotive Human Factors Research Center, AIST, Japan;1. Cultural and Social Neuroscience Research Group, Forensic and Neurodevelopmental Sciences, Kings College London, Institute of Psychiatry, Psychology & Neuroscience, London, UK;2. Department of Psychological Sciences, Birkbeck, University of London, London, UK;3. Division of Psychology and Language Sciences, University College London, UK;4. School of Psychology, Cardiff University, UK;5. Cultural and Social Neuroscience Research Group, Centre for Neuroimaging Sciences, Kings College London, Institute of Psychiatry, Psychology & Neuroscience, London, UK;6. South London and Maudsley NHS Foundation Trust, Bethlem Royal Hospital, Beckenham, Kent, UK |
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| Abstract: | In order to study the feeling of control over decisions, we told 60 participants that a neuroimaging machine could read and influence their thoughts. While inside a mock brain scanner, participants chose arbitrary numbers in two similar tasks. In the Mind-Reading Task, the scanner appeared to guess the participants’ numbers; in the Mind-Influencing Task, it appeared to influence their choice of numbers. We predicted that participants would feel less voluntary control over their decisions when they believed that the scanner was influencing their choices. As predicted, participants felt less control and made slower decisions in the Mind-Influencing Task compared to the Mind-Reading Task. A second study replicated these findings. Participants’ experience of the ostensible influence varied, with some reporting an unknown source directing them towards specific numbers. This simulated thought insertion paradigm can therefore influence feelings of voluntary control and may help model symptoms of mental disorders. |
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| Keywords: | Sense of agency Thought insertion Volition Deception Magic Phenomenology |
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