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Individuals with Autistic Traits Exhibit Heightened Alexithymia But Intact Interoceptive-Exteroceptive Sensory Integration

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Abstract

Interoceptive accuracy has been widely measured using the Heartbeat Tracking Test (HTT). We devised the novel paradigm of Interoception-Exteroception Synchronicity Judgement (IESJ) task to assess participants’ interoceptive accuracy, exteroceptive accuracy, and the balancing score which reflected the ability to allocate attentions between interoceptive and exteroceptive signals. This study administered the behavioural paradigms of the HTT and the IESJ as well as other self-report scales to 119 typically-developing youths. Individuals with lower autistic traits (n = 30) showed comparable interoceptive accuracy, exteroceptive accuracy, and balancing scores as their higher autistic traits counterparts (n = 33). Taken together, the high autistic traits subgroup exhibited higher levels of alexithymia but not empathy or interoception than the low autistic traits subgroup.

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Acknowledgments

This study was supported by a grant from the National Natural Science Foundation of China (31970997) and the CAS Key Laboratory of Mental Health, Institute of Psychology.

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Author Raymond C. K. Chan designed the study and wrote the protocol. Author Han-xue Yang, Han-yu Zhou, Yan-yu Wang and Hong Zheng managed the data collection. Authors Han-xue Yang undertook the statistical analysis and wrote the first draft of the manuscript. Author Raymond C. K. Chan, Simon S. Y. Lui and Yi Wang edited the manuscript. All authors contributed to and have approved the final manuscript.

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Correspondence to Raymond C. K. Chan.

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Yang, HX., Zhou, HY., Zheng, H. et al. Individuals with Autistic Traits Exhibit Heightened Alexithymia But Intact Interoceptive-Exteroceptive Sensory Integration. J Autism Dev Disord 52, 3142–3152 (2022). https://doi.org/10.1007/s10803-021-05199-y

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  • DOI: https://doi.org/10.1007/s10803-021-05199-y

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