{
  "title": "Collective decisions: what the group may never hear",
  "url": "https://www.shr.swiss/blog/decisions-collectives-faire-remonter-information-non-partagee-en",
  "language": "en",
  "datePublished": "2026-07-28",
  "publisher": {
    "name": "SHR — Swiss Human Resources",
    "url": "https://www.shr.swiss",
    "address": "Esplanade de Pont-Rouge 9A, 1212 Lancy, Suisse"
  },
  "summary": "Bringing several areas of expertise together does not guarantee that their information will be used. Research suggests examining what actually enters the discussion, rather than participants' diversity alone.",
  "section": "Research",
  "topic": "Decision-making",
  "place": {
    "name": "Lausanne",
    "region": "Vaud",
    "country": "CH"
  },
  "keyPoints": [
    {
      "heading": "What the literature establishes",
      "point": "Garold Stasser and William Titus (1985, Journal of Personality and Social Psychology) showed experimentally that group discussions favour information initially shared by several members over information held by just one."
    },
    {
      "heading": "Why familiar information dominates the discussion",
      "point": "Garold Stasser and William Titus (1987, Journal of Personality and Social Psychology) studied how information load and the proportion of shared information affect the dissemination of unshared information."
    },
    {
      "heading": "The premature conclusion",
      "point": "One might conclude that discussions should systematically be extended or that everyone should receive equal speaking time."
    },
    {
      "heading": "What these experiments cannot establish",
      "point": "These experiments use structured tasks in which researchers know how information is distributed and can identify the option supported by the complete information set."
    },
    {
      "heading": "A practical check in Lausanne",
      "point": "In Lausanne, a medtech committee, a higher education leadership team, an international sports organisation or a scale-up in the Lake Geneva region can test the same protocol on upcoming collective decisions."
    }
  ],
  "sources": [
    {
      "authors": "Titus",
      "year": "1985",
      "source": "Journal of Personality and Social Psychology"
    },
    {
      "authors": "Titus",
      "year": "1987",
      "source": "Journal of Personality and Social Psychology"
    }
  ],
  "wordCount": 424,
  "image": "https://www.shr.swiss/img/blog-editorial-2026-07-28-en.jpg?v=4",
  "translations": {
    "fr": "https://www.shr.swiss/blog/decisions-collectives-faire-remonter-information-non-partagee",
    "en": "https://www.shr.swiss/blog/decisions-collectives-faire-remonter-information-non-partagee-en",
    "de": "https://www.shr.swiss/blog/decisions-collectives-faire-remonter-information-non-partagee-de",
    "it": "https://www.shr.swiss/blog/decisions-collectives-faire-remonter-information-non-partagee-it"
  },
  "relatedPages": {
    "programme": "https://www.shr.swiss/formation/prise-de-decision/lausanne",
    "city": "https://www.shr.swiss/formations-ville/lausanne",
    "blog": "https://www.shr.swiss/blog"
  },
  "citationPolicy": "Citation autorisée avec mention « SHR — Swiss Human Resources » et lien vers l'article."
}