<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0104-4036</journal-id>
<journal-title><![CDATA[Ensaio: Avaliação e Políticas Públicas em Educação]]></journal-title>
<abbrev-journal-title><![CDATA[Ensaio: aval. pol. públ. educ.]]></abbrev-journal-title>
<issn>0104-4036</issn>
<publisher>
<publisher-name><![CDATA[Fundação CESGRANRIO]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0104-40362025000200204</article-id>
<article-id pub-id-type="doi">10.1590/s0104-40362025003305144</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Calibração com parâmetros de itens fixos]]></article-title>
<article-title xml:lang="en"><![CDATA[Fixed item parameter calibration]]></article-title>
<article-title xml:lang="es"><![CDATA[Calibración con parámetros fijos]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Klein]]></surname>
<given-names><![CDATA[Ruben]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ricarte]]></surname>
<given-names><![CDATA[Thales Akira]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Fundação Cesgranrio  ]]></institution>
<addr-line><![CDATA[Rio de Janeiro RJ]]></addr-line>
<country>Brasil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Fundação Cesgranrio  ]]></institution>
<addr-line><![CDATA[Rio de Janeiro RJ]]></addr-line>
<country>Brasil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2025</year>
</pub-date>
<volume>33</volume>
<numero>127</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://educa.fcc.org.br/scielo.php?script=sci_arttext&amp;pid=S0104-40362025000200204&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://educa.fcc.org.br/scielo.php?script=sci_abstract&amp;pid=S0104-40362025000200204&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://educa.fcc.org.br/scielo.php?script=sci_pdf&amp;pid=S0104-40362025000200204&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo O foco deste artigo é um método de calibração com parâmetros de itens fixos, fixed item parameter estimation (FIPC) para um modelo da teoria de resposta ao item (TRI). O artigo mostra como utilizar os pacotes mirt e irtplay do R e por simulação mostra que os resultados são equivalentes ao uso do método de grupos múltiplos, sendo um dos grupos o grupo de origem dos itens comuns com todos os parâmetros conhecidos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This paper focus on a FIPC (Fixed item parameter estimation) of an IRT (Item Response Theory) model. This shows how to use the R packages mirt and irtplay and by simulation that its results are equivalent to the method of multiple groups, where one of the groups is the group of origin of the common items with all parameters known.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El objetivo de este artículo es un método de calibración con parámetros de ítem fijos, FIPC (estimación de parámetros de ítem fijos) para un modelo IRT (teoría de respuesta al ítem). El artículo muestra cómo usar los paquetes de R mirt e irtplay y, mediante simulación, muestra que los resultados son equivalentes a usar el método de grupos múltiples, siendo uno de los grupos el grupo de origen de los elementos comunes con todos los parámetros conocidos.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[FIPC]]></kwd>
<kwd lng="pt"><![CDATA[TRI]]></kwd>
<kwd lng="pt"><![CDATA[Mirt]]></kwd>
<kwd lng="pt"><![CDATA[Irtplay]]></kwd>
<kwd lng="pt"><![CDATA[Grupos Múltiplos]]></kwd>
<kwd lng="en"><![CDATA[FIPC]]></kwd>
<kwd lng="en"><![CDATA[TRI]]></kwd>
<kwd lng="en"><![CDATA[Mirt]]></kwd>
<kwd lng="en"><![CDATA[Irtplay]]></kwd>
<kwd lng="en"><![CDATA[Multiple groups]]></kwd>
<kwd lng="es"><![CDATA[FIPC]]></kwd>
<kwd lng="es"><![CDATA[TRI]]></kwd>
<kwd lng="es"><![CDATA[Mirt]]></kwd>
<kwd lng="es"><![CDATA[Irtplay]]></kwd>
<kwd lng="es"><![CDATA[Grupos Múltiples]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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