{
  "abstract": "According to the neural overlap hypothesis (Fias et al., 2001), numerical magnitude may influence performance in a non-semantic task when the processing of task-relevant and task-irrelevant information recruits overlapping neural structures. Specifically, because number and orientation processing both engage parietal regions, the account predicts a SNARC effect during orientation judgments, whereas effects should be weaker in tasks with less parietal involvement, such as colour judgments. However, only a few studies have attempted to replicate the original findings. Here, we conducted a large-sample replication of the line orientation task introduced by Fias et al. (2001, Experiment 4) and included letters as a complementary condition. Across two experiments, conducted online and in the laboratory, we consistently failed to detect a SNARC effect for numbers or a SNARC-like effect for letters. A cumulative analysis likewise provided no evidence for either association. These findings fail to replicate a key result supporting the neural overlap hypothesis and suggest that shared parietal processing may not give rise to spatial-numerical associations as robustly as previously assumed.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "name": "Valter Prpic"
    },
    {
      "name": "Stefano Pileggi"
    },
    {
      "name": "Alberto Mariconda"
    },
    {
      "name": "Serena Mingolo"
    },
    {
      "name": "MAURO MURGIA"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/a6nx2t8dgcpqt.bib",
  "cited_by": 0,
  "doi": "10.31234/osf.io/fp69k_v2",
  "fulltext_url": null,
  "id": "a6nx2t8dgcpqt",
  "issns": [],
  "landing_url": "https://osf.io/preprints/psyarxiv/fp69k_v2/",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "bepress",
      "Neuroscience"
    ],
    [
      "bepress",
      "Social and Behavioral Sciences"
    ],
    [
      "openalex",
      "2613|Cognitive and developmental aspects of mathematical skills"
    ]
  ],
  "openalex": "W7221791005",
  "pdf_url": "https://osf.io/fp69k/download",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-14",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/a6nx2t8dgcpqt.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:20:37Z",
      "native_id": "fp69k",
      "source": "osf",
      "url": "https://osf.io/preprints/psyarxiv/fp69k_v2/"
    }
  ],
  "subjects": [
    {
      "field": "biology",
      "origin": "bepress:Neuroscience",
      "subfield": "neuroscience"
    }
  ],
  "title": "Judging orientation does not elicit the Spatial-Numerical Association of Response Codes: Testing the Neural Overlap Hypothesis",
  "title_text": "Judging orientation does not elicit the Spatial-Numerical Association of Response Codes: Testing the Neural Overlap Hypothesis",
  "type": "preprint",
  "updated_at": "2026-10-30T12:20:37Z",
  "url": "https://research.draconitic.com/paper/a6nx2t8dgcpqt",
  "venue": "PsyArXiv",
  "versions": []
}