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This study investigates brief digital interventions aimed at regulating cognitive and affective disturbances related to social anxiety, specifically focusing on fear responses in a social-evaluative threat context. One-hundred-twenty healthy youth were randomly assigned to one of four conditions: attention training, detached mindfulness, slow breathing, or an active control condition. To induce social-evaluative threat, participants delivered a public speech after a 12-min video intervention. We assessed subjective anxiety levels, metacognition, heart rate variability (HRV), and subjective and objective performance ratings throughout the experiment. Results indicated that the slow breathing intervention significantly increased HRV immediately after the intervention, during the public speaking task, and during the recovery and reduced state anxiety immediately after the intervention. In contrast, attention training and detached mindfulness did not yield significant effects, although detached mindfulness did increase HRV immediately post-intervention. These preliminary findings suggest that brief digital interventions, especially slow breathing, may effectively alleviate fear responses in youth during social-evaluative contexts, highlighting their potential as accessible support tools.<\/jats:p>","DOI":"10.1038\/s41598-025-96602-6","type":"journal-article","created":{"date-parts":[[2025,4,11]],"date-time":"2025-04-11T08:50:07Z","timestamp":1744361407000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["A proof of concept study on digital interventions for reducing socio-evaluative stress and anxiety in youth"],"prefix":"10.1038","volume":"15","author":[{"given":"R\u00fcya","family":"Akda\u011f","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mariska E.","family":"Kret","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Evin","family":"Aktar","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Milica","family":"Nikoli\u0107","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2025,4,11]]},"reference":[{"key":"96602_CR1","doi-asserted-by":"publisher","first-page":"1142","DOI":"10.1001\/jamapediatrics.2021.2482","volume":"175","author":"N Racine","year":"2021","unstructured":"Racine, N. et al. 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