Illustrating the pathway from affect to somatic symptom: the Affective Picture Paradigm*

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Abstract

High levels of somatic symptom distress represent a core component of both mental and physical illness. The exact aetiology and pathogenesis of this transdiagnostic phenomenon remain largely unknown. The Affective Picture Paradigm (APP) represents an innovative experimental paradigm to study somatic symptom distress. Based on the HiTOP framework and a population-based sampling approach, associations between facets of somatic symptom distress and symptoms induced by the APP were explored in two studies (N1 = 201; N2 = 254) using structural equation bi-factor models. Results showed that the APP effect was significantly positively correlated with general somatic symptom distress (PHQ-15, HiTOP), cardio-respiratory symptoms (PHQ-15), as well as difficulties identifying feelings. In conclusion, negative affective cues in the APP can elicit somatic symptoms, particularly in people with higher levels of somatic symptom distress. Difficulties identifying feelings might contribute to this phenomenon. Results are compatible with a predictive processing account of somatic symptom perception.

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Petzke, T. M., Weber, K., Van den Bergh, O., & Witthöft, M. (2024). Illustrating the pathway from affect to somatic symptom: the Affective Picture Paradigm*. Cognition and Emotion, 38(5), 801–817. https://doi.org/10.1080/02699931.2024.2319273

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