{"id":3223,"date":"2026-03-05T09:36:20","date_gmt":"2026-03-05T08:36:20","guid":{"rendered":"https:\/\/edu.ge.ch\/site\/tablettepedagogique\/?p=3223"},"modified":"2026-03-04T07:12:20","modified_gmt":"2026-03-04T06:12:20","slug":"chatgpt-et-leffet-de-halo","status":"publish","type":"post","link":"https:\/\/edu.ge.ch\/site\/tablettepedagogique\/2026\/03\/05\/chatgpt-et-leffet-de-halo\/","title":{"rendered":"ChatGPT et l&#8217;effet de halo"},"content":{"rendered":"<p class=\"maps-to-line\">Il y a quelques mois, j&#8217;ai re\u00e7u un article \u00e0 relire. Il s&#8217;agissait d&#8217;un article analysant un sondage : la r\u00e9colte de donn\u00e9es avait \u00e9t\u00e9 faite manuellement et l&#8217;analyse \u00e9tait g\u00e9n\u00e9r\u00e9e par des mod\u00e8les de langage (IA).<br \/>\nJ&#8217;ai \u00e9t\u00e9 bluff\u00e9e par la qualit\u00e9 de l&#8217;analyse et les jolis graphiques qui l&#8217;accompagnaient.<br \/>\nBluff\u00e9e&#8230; c&#8217;est vraiment le bon mot ! Car, apr\u00e8s relecture, il y avait beaucoup d&#8217;erreurs et d&#8217;incoh\u00e9rences. Heureusement, des relecteurs plus attentifs que moi les ont relev\u00e9es. Pour ma part, je n&#8217;ai vu la m\u00e9diocrit\u00e9 de l&#8217;article qu&#8217;apr\u00e8s qu&#8217;on m&#8217;encourage \u00e0 y \u00eatre attentive.<\/p>\n<p class=\"maps-to-line\">Pourquoi peut-on se faire si facilement avoir par une production d&#8217;IA m\u00e9diocre ? Parce que, globalement, nos cerveaux ne sont pas bien difficiles \u00e0 convaincre ! Les illusions d&#8217;optique sont un bon support pour nous le rappeler.<\/p>\n<figure style=\"width: 240px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/fr.wikipedia.org\/wiki\/Tables_de_Shepard\"><img loading=\"lazy\" decoding=\"async\" class=\"mw-file-element\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/4\/45\/Table_shepard.preview.jpg\/250px-Table_shepard.preview.jpg\" alt=\"\" width=\"250\" height=\"160\" data-file-width=\"630\" data-file-height=\"403\" \/><\/a><figcaption class=\"wp-caption-text\">Ces deux tables sont de m\u00eame forme : difficile \u00e0 croire \u00e0 moins d&#8217;utiliser un gabarit !<\/figcaption><\/figure>\n<p>Dans le cas pr\u00e9cis que je raconte, je vois un &#8220;biais cognitif&#8221; \u00e0 l&#8217;\u0153uvre : l&#8217;effet de halo.<br \/>\nOn a tendance \u00e0 attribuer tout un tas de qualit\u00e9s \u00e0 des personnes sur simple observation d&#8217;une de leur qualit\u00e9. Par exemple, on aura l&#8217;impression qu&#8217;une personne belle doit \u00eatre aussi intelligente, consciencieuse, etc. Comme tous les biais cognitifs, il affecte notre jugement sans qu&#8217;on en soit conscients. (2)<\/p>\n<p><!--more--><\/p>\n<figure style=\"width: 588px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/inforjeunes.be\/effet-de-halo\/\"><img loading=\"lazy\" decoding=\"async\" class=\"d1fekHMv2WPYZzgPAV7b\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https%3A%2F%2Finforjeunes.be%2Fwp-content%2Fuploads%2F2022%2F10%2FINFOR_Biais_04_Draft_03-1024x1024.png&amp;f=1&amp;nofb=1&amp;ipt=26773f0e3b3cd9b597ca3162faded65731754dd4600491abe4d5a57de3253bc3\" alt=\"L'effet de halo : un \u00e9l\u00e9ment \u00abcontamine\u00bb notre perception globale ...\" width=\"598\" height=\"598\" \/><\/a><figcaption class=\"wp-caption-text\">L\u2019effet de halo est la tendance \u00e0 se faire une id\u00e9e g\u00e9n\u00e9rale d\u2019une personne sur base d\u2019un ou plusieurs traits sp\u00e9cifiques. (3)<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<p class=\"maps-to-line\">Quel lien avec mon histoire ? L&#8217;article \u00e9tait (tr\u00e8s) bien pr\u00e9sent\u00e9 et (tr\u00e8s) bien \u00e9crit. Ces qualit\u00e9s sur la forme ont probablement eu un &#8220;effet halo&#8221; qui m&#8217;a laiss\u00e9 penser automatiquement que le fond \u00e9tait \u00e9galement de bonne qualit\u00e9.<br \/>\nCette &#8220;m\u00e9saventure&#8221; m&#8217;apprend donc quelque chose d&#8217;important : il faut faire attention \u00e0 ne plus utiliser la forme comme un\u00a0<em>proxy<\/em>\u00a0de la qualit\u00e9 du fond. C&#8217;\u00e9tait un crit\u00e8re d\u00e9j\u00e0 discutable avant l&#8217;\u00e8re des IA g\u00e9n\u00e9ratives de texte, et qui devient compl\u00e9tement trompeur aujourd&#8217;hui.<br \/>\nPrenons le chemin long de &#8220;la spirale de la tortue&#8221; : doutons, informons-nous, analysons&#8230; et recommen\u00e7ons !<\/p>\n<figure id=\"attachment_3235\" aria-describedby=\"caption-attachment-3235\" style=\"width: 290px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/edu.ge.ch\/site\/tablettepedagogique\/wp-content\/uploads\/sites\/7\/2026\/03\/500-book-02.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3235 size-medium\" src=\"https:\/\/edu.ge.ch\/site\/tablettepedagogique\/wp-content\/uploads\/sites\/7\/2026\/03\/500-book-02-300x211.jpg\" alt=\"\" width=\"300\" height=\"211\" srcset=\"https:\/\/edu.ge.ch\/site\/tablettepedagogique\/wp-content\/uploads\/sites\/7\/2026\/03\/500-book-02-300x211.jpg 300w, https:\/\/edu.ge.ch\/site\/tablettepedagogique\/wp-content\/uploads\/sites\/7\/2026\/03\/500-book-02.jpg 600w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-3235\" class=\"wp-caption-text\">La &#8220;spirale de la tortue&#8221;, un outil propos\u00e9 par l&#8217;Association A Seconde Vue (4)<\/figcaption><\/figure>\n<p class=\"maps-to-line\">NB :<br \/>\n&#8211; le titre mentionne &#8220;chatGPT&#8221; mais pour l&#8217;\u00e9criture de l&#8217;article, ce n&#8217;est pas seulement chatGPT qui avait \u00e9t\u00e9 utilis\u00e9<br \/>\n&#8211; cette m\u00e9saventure pourrait donner l&#8217;impression que les grands mod\u00e8les de langages sont uniquement de la poudre aux yeux. Je ne le pense pas. J&#8217;utilise notamment des IA pour m&#8217;aider \u00e0 coder (voire pour coder \u00e0 ma place) et le r\u00e9sultat est excellent (et il ne s&#8217;agit pas seulement de bluff puisque j&#8217;obtiens un programme qui tourne et fait ce que je veux \ud83d\ude09 )<br \/>\n&#8211; si les liens entre IA et esprit critique vous int\u00e9ressent, nous proposons r\u00e9guli\u00e8rement des formations en pr\u00e9sence sur ces th\u00e8mes. Il reste de la place pour le <a href=\"https:\/\/edu.ge.ch\/sem\/actualites\/aider-les-eleves-faire-face-lia-4244\">mercredi \u00e0 th\u00e8me du 11 mars<\/a> o\u00f9 il en sera notamment question. Il existe \u00e9galement une formation \u00e0 distance : <a title=\"https:\/\/edu.ge.ch\/site\/fc\/sem-10349\/\" href=\"https:\/\/edu.ge.ch\/site\/fc\/sem-10349\/\" data-from-md=\"\">https:\/\/edu.ge.ch\/site\/fc\/sem-10349\/<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>R\u00e9f\u00e9rences :<\/p>\n<p class=\"maps-to-line\">(1) Tables de Shepard : https:\/\/fr.wikipedia.org\/wiki\/Tables_de_Shepard<br \/>\n(2) L&#8217;effet de halo, pr\u00e9sent\u00e9 sur la chaine youtube Science\u00c9tonnante : <a title=\"https:\/\/www.youtube.com\/watch?v=xJO5GstqTSY\" href=\"https:\/\/www.youtube.com\/watch?v=xJO5GstqTSY\" data-from-md=\"\">https:\/\/www.youtube.com\/watch?v=xJO5GstqTSY<\/a> \/ page wikipedia : <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Effet_de_halo\">https:\/\/fr.wikipedia.org\/wiki\/Effet_de_halo<\/a><br \/>\n(3) Effet de halo : https:\/\/inforjeunes.be\/effet-de-halo\/<br \/>\n(4) Je tiens cette image de l&#8217;association A Seconde Vue, association de promotion de l&#8217;esprit critique : <a title=\"https:\/\/www.afis.org\/Entretien-avec-Luc-Rodet\" href=\"https:\/\/www.afis.org\/Entretien-avec-Luc-Rodet\" data-from-md=\"\">https:\/\/www.afis.org\/Entretien-avec-Luc-Rodet<\/a><\/p>\n<p>Image d\u2019illustration g\u00e9n\u00e9r\u00e9e le 3 mars avec gemini<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Il y a quelques mois, j&#8217;ai re\u00e7u un article \u00e0 relire. Il s&#8217;agissait d&#8217;un article analysant un sondage : la r\u00e9colte de donn\u00e9es avait \u00e9t\u00e9 faite manuellement et l&#8217;analyse \u00e9tait g\u00e9n\u00e9r\u00e9e par des mod\u00e8les de langage (IA). J&#8217;ai \u00e9t\u00e9 bluff\u00e9e par la qualit\u00e9 de l&#8217;analyse et les jolis graphiques qui l&#8217;accompagnaient. Bluff\u00e9e&#8230; c&#8217;est vraiment le &#8230; <a title=\"ChatGPT et l&#8217;effet de halo\" class=\"read-more\" href=\"https:\/\/edu.ge.ch\/site\/tablettepedagogique\/2026\/03\/05\/chatgpt-et-leffet-de-halo\/\" aria-label=\"En savoir plus sur ChatGPT et l&#8217;effet de halo\">Lire la suite<\/a><\/p>\n","protected":false},"author":344,"featured_media":3227,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[374,332],"tags":[],"class_list":["post-3223","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ia","category-intelligence-artificielle"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ChatGPT et l&#039;effet de halo - Le blog des formatrices et formateurs du SEM<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/edu.ge.ch\/site\/tablettepedagogique\/2026\/03\/05\/chatgpt-et-leffet-de-halo\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ChatGPT et l&#039;effet de halo - Le blog des formatrices et formateurs du SEM\" \/>\n<meta property=\"og:description\" content=\"Il y a quelques mois, j&#8217;ai re\u00e7u un article \u00e0 relire. Il s&#8217;agissait d&#8217;un article analysant un sondage : la r\u00e9colte de donn\u00e9es avait \u00e9t\u00e9 faite manuellement et l&#8217;analyse \u00e9tait g\u00e9n\u00e9r\u00e9e par des mod\u00e8les de langage (IA). J&#8217;ai \u00e9t\u00e9 bluff\u00e9e par la qualit\u00e9 de l&#8217;analyse et les jolis graphiques qui l&#8217;accompagnaient. Bluff\u00e9e&#8230; c&#8217;est vraiment le ... 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