(en) Interoception is the processing of internal bodily states by the nervous system. One of its most studied dimensions is interoceptive accuracy (IAcc), the objective capacity to detect internal bodily signals. Although the Heartbeat Counting Task (HBCT; Schandry, 1981) is the most frequently used measure of this construct, the interoception community has increasingly acknowledged its lack of construct validity to measure IAcc, following a large body of evidence (Brener and Ring, 2016, Desmedt et al., 2018). [...]
Desmedt, O., Luminet, O., Maurage, P., & Corneille, O. (2023). The validity issues of the heartbeat counting task are not ruled out by Schulz et al. (2021): A commentary. Biological Psychology, 184, 108693. https://doi.org/10.1016/j.biopsycho.2023.108693 (Original work published 2023)