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The Mediating Effects of Alexithymia,Intolerance of Uncertainty,and Anxiety on the Relationship Between Sensory Processing Differences and Restricted and Repetitive Behaviours in Autistic Adults |
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| Authors: | Moore Heather L. Brice Samuel Powell Lauren Ingham Barry Freeston Mark Parr Jeremy R. Rodgers Jacqui |
| Affiliation: | 1.School of Psychology, 4.28, Dame Margaret Barbour Building, Wallace Street, Newcastle Upon Tyne, NE2 4DR, UK ;2.Population Health Sciences Institute, Sir James Spence Institute, Newcastle University, Royal Victoria Infirmary, Level 3, Queen Victoria Road, Newcastle Upon Tyne, NE1 4LP, UK ;3.Cumbria, Northumberland, Tyne & Wear NHS Foundation Trust, St. Nicholas Hospital, Jubilee Road, Newcastle Upon Tyne, NE3 1XT, UK ; |
| Abstract: | Distress caused by sensory processing differences for autistic individuals may be reduced by repetitive behaviours (RRB), including repetitive motor (RMB) and insistence on sameness (ISB) behaviours. Intolerance of uncertainty (IU) and anxiety mediate the relationship between sensory processing and RRB in autistic children. We replicated this model in autistic adults, extending it to include alexithymia. Serial mediation, using data from 426 autistic adults, identified significant direct effects from sensory processing to RMB and ISB, and indirect effects through alexithymia-IU-anxiety for RMB, and IU alone, and alexithymia-IU for ISB. Different mechanisms may underpin RMB and ISB. Alexithymia alongside, IU and anxiety, should be considered when understanding the relationship between sensory processing and RRB, and when offering interventions to support autistic people. |
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