{"id":64840,"date":"2025-10-23T17:44:08","date_gmt":"2025-10-23T17:44:08","guid":{"rendered":"https:\/\/www.iseg.ulisboa.pt\/?post_type=event&#038;p=64840"},"modified":"2025-10-23T17:44:28","modified_gmt":"2025-10-23T17:44:28","slug":"iseg-research-seminar-otilia-boldea","status":"publish","type":"event","link":"https:\/\/www.iseg.ulisboa.pt\/en\/event\/iseg-research-seminar-otilia-boldea\/","title":{"rendered":"ISEG Research Seminar | Otilia Boldea"},"content":{"rendered":"<p>On\u00a0<strong>Wednesday, 29 October<\/strong>,<strong>\u00a0<\/strong>from 13.00 to 14.00, a joint session has been held of the\u00a0<strong>ISEG Research Seminars<\/strong> and the <strong>Research Seminar Series in Mathematics Applied to Economics and Management<\/strong>. The guest speaker was \u00a0<strong><a href=\"https:\/\/eur02.safelinks.protection.outlook.com\/?url=https%3A%2F%2Fsites.google.com%2Fsite%2Fotiliaboldea%2Fhome-1&amp;data=05%7C02%7Cpaula.monteiro%40iseg.ulisboa.pt%7C294f7ccd71684ea19d0408de11a932cc%7C9c184083de204859968c96f26db0bfe1%7C0%7C0%7C638967615554887669%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&amp;sdata=0aOUePNUMEivdiwoHeAfw5wSKRz0tn2EP4eXPAZRAKw%3D&amp;reserved=0\" target=\"_blank\" rel=\"noreferrer noopener\">Otilia Boldea<\/a><\/strong> (Tilburg University), who presented a\u00a0<em>paper on\u00a0<\/em>\"<strong>Bootstrapping GMM tests for an unknown threshold<\/strong>'.<\/p>\n\n\n\n<p>The\u00a0<a href=\"https:\/\/www.iseg.ulisboa.pt\/en\/2025\/09\/iseg-research-seminars25\/\" target=\"_blank\" rel=\"noreferrer noopener\">ISEG Research Seminars<\/a>\u00a0are held every week on Wednesdays in Lecture Theatre 4 of Quelhas (4th floor), with the participation of professors from ISEG and other Portuguese and international universities.<\/p>\n\n\n\n<p>Free admission<\/p>\n\n\n\n<h5 class=\"wp-block-heading has-iseg-red-color has-text-color has-link-color wp-elements-193c40c7088df19a3cd9046b20a2e739\">Abstract<\/h5>\n\n\n\n<p><\/p>\n\n\n\n<p><span style=\"font-size:10.5pt;font-family:&quot;Calibri&quot;,sans-serif;mso-fareast-font-family:Aptos;mso-fareast-theme-font:minor-latin;color:#212121;mso-ligatures:standardcontextual;mso-ansi-language:EN-US;mso-fareast-language:EN-US;mso-bidi-language:AR-SA\">We prove that the test for an unknown threshold in models with endogenous regressors - proposed in Caner and Hansen (2004) - can exhibit severe size distortions due to the behavior of the test sequence at the edge of the sample. We propose two GMM LR-type and two GMM LM-type tests that rectify these size distortions. Just like the test in Caner and Hansen (2004), our tests are non-pivotal, and we prove their bootstrap validity. The empirical application revisits the question in Ramey and Zubairy (2018) whether government spending multipliers are larger in recessions, but using tests for an unknown threshold. Consistent with Ramey and Zubairy (2018), we do not find strong evidence that these multipliers are larger in recessions.<\/span><\/p>","protected":false},"excerpt":{"rendered":"Na\u00a0quarta-feira, dia 29 de outubro,\u00a0entre as 13h00 e as 14h00, tem lugar uma sess\u00e3o conjunta dos\u00a0ISEG Research Seminars e dos Research Seminar Series in Mathematics Applied to Economics and Management.&nbsp;[&#8230;]","protected":false},"featured_media":63709,"template":"","topic":[1401],"event_type":[1155],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>ISEG Research Seminar | Otilia Boldea - ISEG<\/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:\/\/www.iseg.ulisboa.pt\/en\/event\/iseg-research-seminar-otilia-boldea\/\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.iseg.ulisboa.pt\/en\/event\/iseg-research-seminar-otilia-boldea\/\",\"url\":\"https:\/\/www.iseg.ulisboa.pt\/en\/event\/iseg-research-seminar-otilia-boldea\/\",\"name\":\"ISEG Research Seminar | Otilia Boldea - ISEG\",\"isPartOf\":{\"@id\":\"https:\/\/www.iseg.ulisboa.pt\/en\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.iseg.ulisboa.pt\/en\/event\/iseg-research-seminar-otilia-boldea\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.iseg.ulisboa.pt\/en\/event\/iseg-research-seminar-otilia-boldea\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.iseg.ulisboa.pt\/wp-content\/uploads\/ISEG_Seminars25_Evento.png\",\"datePublished\":\"2025-10-23T17:44:08+00:00\",\"dateModified\":\"2025-10-23T17:44:28+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.iseg.ulisboa.pt\/en\/event\/iseg-research-seminar-otilia-boldea\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.iseg.ulisboa.pt\/en\/event\/iseg-research-seminar-otilia-boldea\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.iseg.ulisboa.pt\/en\/event\/iseg-research-seminar-otilia-boldea\/#primaryimage\",\"url\":\"https:\/\/www.iseg.ulisboa.pt\/wp-content\/uploads\/ISEG_Seminars25_Evento.png\",\"contentUrl\":\"https:\/\/www.iseg.ulisboa.pt\/wp-content\/uploads\/ISEG_Seminars25_Evento.png\",\"width\":5000,\"height\":2626},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.iseg.ulisboa.pt\/en\/event\/iseg-research-seminar-otilia-boldea\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.iseg.ulisboa.pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"ISEG Research Seminar | Otilia Boldea\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.iseg.ulisboa.pt\/en\/#website\",\"url\":\"https:\/\/www.iseg.ulisboa.pt\/en\/\",\"name\":\"ISEG\",\"description\":\"Lisbon School of Economics &amp; 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