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Yet the underlying mechanisms remain unclear. We investigated both explicit emotion recognition and implicit attentional biases in manifest HD patients to assess whether altered attentional orienting may explain the selective deficit in negative emotions. To our knowledge, this represents the first study of its kind in HD. Twenty patients with manifest HD and 25 controls completed an explicit facial emotion recognition task (neutral, disgust, fear, and happiness) and two dot-probe tasks (100\u00a0ms and 500\u00a0ms SOAs) to dissociate automatic and controlled attentional processes. Attentional Facilitation Index (AFI) and Disengagement Index (DI) were calculated. Huntington's disease patients showed reduced accuracy and slower reaction times in recognizing negative emotions (fear and disgust). At the 100-ms SOA in the dot-probe task, they exhibited reduced attentional facilitation for fearful faces and greater facilitation for happy faces compared with controls, with a similar pattern observed for attentional disengagement. No significant differences emerged at 500\u00a0ms SOA. These findings reveal a \u201chyperpositivity effect\u201d in HD: an early automatic prioritization of positive stimuli alongside reduced attentional capture by negative ones. This pattern, which parallels the positivity bias in normal aging, may contribute to the selective impairment in negative emotion recognition. A plausible underlying mechanism involves striatal dopaminergic dysregulation. Longitudinal studies in premanifest gene carriers are needed to clarify this bias\u2019s development.<\/jats:p>","DOI":"10.3758\/s13415-026-01503-4","type":"journal-article","created":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T18:01:40Z","timestamp":1792087300000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Attentional emotional bias in Huntington\u2019s disease: The \u201cHyper-Positive\u201d effect"],"prefix":"10.3758","author":[{"given":"Stefania","family":"Righi","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Viola","family":"Benedetti","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Agnese","family":"Zonino","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gioele","family":"Gavazzi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elena","family":"Giachi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elena","family":"Capacci","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maria Pia","family":"Viggiano","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Francesco","family":"Rotella","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lapo","family":"Pierguidi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Camilla","family":"Ferrari","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,10,15]]},"reference":[{"key":"1503_CR1","doi-asserted-by":"crossref","first-page":"163","DOI":"10.3389\/fpsyg.2011.00163","volume":"2","author":"E Aarts","year":"2011","unstructured":"Aarts, E., van Holstein, M., & Cools, R. 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