<?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>1657-8961</journal-id>
<journal-title><![CDATA[Pensamiento Psicológico]]></journal-title>
<abbrev-journal-title><![CDATA[Pensam. psicol.]]></abbrev-journal-title>
<issn>1657-8961</issn>
<publisher>
<publisher-name><![CDATA[Pontificia Universidad Javeriana, seccional Cali]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1657-89612016000200006</article-id>
<article-id pub-id-type="doi">10.11144/Javerianacali.PPSI14-2.ppem</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Propiedades psicométricas de una escala para medir dificultades en habilidades sociales relacionadas con la victimización]]></article-title>
<article-title xml:lang="en"><![CDATA[Psychometric Properties of a Scale to Assess the Social Skills Difficulties Related to Victimization]]></article-title>
<article-title xml:lang="pt"><![CDATA[Propriedades psicométricas de uma escala para medir dificuldades nas habilidades sociais relacionadas com a vitimização]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valdés Cuervo]]></surname>
<given-names><![CDATA[Ángel Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Madrid López]]></surname>
<given-names><![CDATA[Esthela Jacqueline]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carlos Martínez]]></surname>
<given-names><![CDATA[Ernesto Alonso]]></given-names>
</name>
<xref ref-type="aff" rid="A03"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez Ferrer]]></surname>
<given-names><![CDATA[Belén]]></given-names>
</name>
<xref ref-type="aff" rid="A04"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Instituto Tecnológico de Sonora  ]]></institution>
<addr-line><![CDATA[ciudad Obregón ]]></addr-line>
<country>México</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Instituto Tecnológico de Sonora  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A03">
<institution><![CDATA[,Instituto Tecnológico Superior de Cajeme  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A04">
<institution><![CDATA[,Universidad Pablo de Olavide  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<volume>14</volume>
<numero>2</numero>
<fpage>77</fpage>
<lpage>88</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S1657-89612016000200006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S1657-89612016000200006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S1657-89612016000200006&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Objetivo. Establecer las propiedades psicométricas de una escala para medir dificultades en habilidades sociales para afrontar la agresión por pares. Método. Participaron 502 estudiantes mexicanos de educación primaria, 2 79 niños (M = 10.52, DE = 1.13 años) y 223 niñas (M = 10.81, DE = 1.25 años). Se comparó el ajuste empírico de dos modelos (unidimensional y bidimensional), y se determinó la validez concurrente de la escala al indagar la relación de sus puntajes con reportes de victimización. Resultados. El modelo bidimensional (vulnerabilidad y pasividad) presentó mejores indicadores de ajuste (X² = 36.60, gl = 19, p = 0.009; X²/gl = 1.92; CFI = 0.98; AGFI = 0.96; RMSEA = 0.04 IC 90 &#91;0.02 - 0.06&#93;; SRMR = 0.04; AIC = 70.60) que el unidimensional (X² = 290.42, gl = 20, p = 0.000; X²/gl = 15.27; CFI = 0.48; AGFI = 0.75; RMSEA = 0.27 IC 90 &#91;0.20 - 0.25&#93;; SRMR = 0.16; AIC = 337.42). Las dificultades en las habilidades sociales explican una parte significativa de la varianza de los reportes de victimización en ambos sexos (hombres: R² = 0.20, f² = 0.25; mujeres: R² = 0.24, f² = 0.32). Conclusión. La escala posee propiedades psicométricas que permiten su utilización en la medición de dificultades en habilidades sociales para afrontar la agresión por pares.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Objective. Determine the psychometric properties of a scale to measure social skills difficulties in handling peer aggression. Method. 502 Mexican students participated in the study of which 279 were boys (M = 10.52, DE = 1.13 years) and 223 girls (M = 10.81, DE = 1.25 years). The study compared the empirical adjustment of two measurement models (one-dimensional and two-dimensional) to measure social skills difficulties associated with victimization by peers and establish evidence of concurrent validity of the scale to investigate the relationship of their scores with reports of victimization. Results. It was found that the measurement model comprised of two dimensions (vulnerability and passivity) has better indicators of adjustment (X² = 36.60, df = 19, p = 0.009; X²/df = 1.92; CFI = 0.98; AGFI = 0.96; RMSEA = 0.04 CI 90 &#91;0.02 - 0.06&#93;; SRMR = 0.04; AIC = 70.60) with respect to a dimension for both (X² = 290.42, df = 20, p = 0.000; X²/df = 15.27; CFI = 0.48; AGFI = 0.75; RMSEA = 0.27 CI 90 &#91;0.20 - 0.25&#93;; SRMR = 0,16; AIC = 337,42). The difficulties in developing social skills explain a significant part of the variance of the reports of victimization of both students (men: R² = 0.20, f²= 0.25; women: R² = 0.24, f²= 0.32). Conclusion. The scale has psychometric properties that allow its use in measuring social skills difficulties to face peer aggression.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Escopo. Estabelecer as propriedades psicométricas de uma escala para medir dificuldades nas habilidades sociais para afrontar a agressão por pares. Metodologia. Participaram 502 estudantes mexicanos de educação primária, 279 crianças masculinas (M = 10.52, DE = 1.13 años) e 223 femininas (M = 10.81, DE = 1.25 años). Foi comparado o ajuste empírico de dois modelos (unidimensional e bidimensional), e foi determinada a validez concorrente da escala ao indagar a relação de suas pontuações com reportes de vitimização. Resultados. O modelo bidimensional (vulnerabilidade e passividade) apresentou melhores indicadores de ajuste (X² = 36.60, gl = 19, p = 0.009; X²/gl = 1.92; CFI = 0.98; AGFI = 0.96; RMSEA = 0.04 IC 90 &#91;0.02 - 0.06&#93;; SRMR = 0.04; AIC = 70.60) que o unidimensional (X² = 290.42, gl =20, p = 0.000; X²/gl = 15.27; CFI = 0.48; AGFI = 0.75; RMSEA = 0.27 IC 90 &#91;0.20 - 0.25&#93;; SRMR = 0.16; AIC = 337.42). As dificuldades nas habilidades sociais explicam uma parte significativa da variação dos reportes de vitimização em ambos sexos (homens R² = 0.20, f² = 0.25; mulheres R² = 0.24, f² = 0.32). Conclusão. A escala possui propriedades psicométricas que permitem sua utilização na medição de dificuldades nas habilidades sociais para afrontar a agressão por pares.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Habilidades sociales]]></kwd>
<kwd lng="es"><![CDATA[validez de la prueba]]></kwd>
<kwd lng="es"><![CDATA[acoso escolar]]></kwd>
<kwd lng="en"><![CDATA[Social skills]]></kwd>
<kwd lng="en"><![CDATA[validity of tests]]></kwd>
<kwd lng="en"><![CDATA[bullying]]></kwd>
<kwd lng="pt"><![CDATA[Habilidades sociais]]></kwd>
<kwd lng="pt"><![CDATA[validação da prova]]></kwd>
<kwd lng="pt"><![CDATA[acosso escolar]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  <font size="2" face="verdana">     <p align="center"><font size="4"><b>Propiedades psicom&eacute;tricas de una escala para medir dificultades en habilidades sociales relacionadas con la victimizaci&oacute;n<sup>1</sup></b></font></p>     <p align="center"><font size="3"><b>Psychometric Properties of a Scale to Assess the Social Skills Difficulties Related to Victimization</b></font></p>     <p align="center"><font size="3"><b>Propriedades psicom&eacute;tricas de uma escala para medir dificuldades nas habilidades sociais relacionadas com a vitimiza&ccedil;&atilde;o</b></font></p>     <p align="center">&Aacute;ngel Alberto Vald&eacute;s Cuervo<sup>2</sup>    <br> Esthela Jacqueline Madrid L&oacute;pez<sup>3</sup>    <br> Ernesto Alonso Carlos Mart&iacute;nez<sup>4</sup>    <br> Bel&eacute;n Mart&iacute;nez Ferrer<sup>5</sup></p>     <p>Instituto Tecnol&oacute;gico de Sonora, Obreg&oacute;n (M&eacute;xico)    <br> Instituto Tecnol&oacute;gico Superior de Cajeme, Obreg&oacute;n (M&eacute;xico)    ]]></body>
<body><![CDATA[<br> Universidad Pablo de Olavide, Sevilla (Espa&ntilde;a)</p>     <p><sup>1</sup>Este trabajo forma parte de un proyecto financiado por el Programa de Mejoramiento del Profesorado (Prodep) con folio ITSON-EXB-09    <br> <sup>2</sup>Doctor en Ciencias. Profesor investigador titular, Departamento de Educaci&oacute;n, Instituto Tecnol&oacute;gico de Sonora.  Calle 5 de Febrero 818 Sur, ciudad Obreg&oacute;n, Sonora, M&eacute;xico. CP: 85000. Correo de correspondencia: <a target="_blank" href="mailto:angel.valdes@itson.edu.mx">angel.valdes@itson.edu.mx</a>    <br> <sup>3</sup>Licenciada en Educaci&oacute;n    <br> <sup>4</sup>Doctor en Ciencias Sociales    <br> <sup>5</sup>Doctora en Psicolog&iacute;a</p>     <p>Recibido: 14/12/2015 Aceptado: 15/05/2016</p> <hr>     <p align="center"><b>Para citar este art&iacute;culo / to cite this article / para citar este artigo</b></p>     <p>Vald&eacute;s, &Aacute;. A., Carlos E. A., Mart&iacute;nez, B. y Madrid, E. J. (2016). Propiedades psicom&eacute;tricas de una escala para medir dificultades en habilidades sociales relacionadas con la victimizaci&oacute;n. <i>Pensamiento Psicol&oacute;gico, 14</i>(2), 77-88. doi:10.11144/Javerianacali.PPSI14-2.ppem</p> <hr>     <p><font size="3"><b>Resumen</b></font></p>     ]]></body>
<body><![CDATA[<p><b>Objetivo. </b>Establecer las propiedades psicom&eacute;tricas de una escala para medir dificultades en habilidades sociales para afrontar la agresi&oacute;n por pares. <b>M&eacute;todo. </b>Participaron 502 estudiantes mexicanos de educaci&oacute;n primaria, 2 79 ni&ntilde;os (M = 10.52, <i>DE </i>= 1.13 a&ntilde;os) y 223 ni&ntilde;as (M = 10.81, <i>DE </i>= 1.25 a&ntilde;os). Se compar&oacute; el ajuste emp&iacute;rico de dos modelos (unidimensional y bidimensional), y se determin&oacute; la validez concurrente de la escala al indagar la relaci&oacute;n de sus puntajes con reportes de victimizaci&oacute;n. <b>Resultados. </b>El modelo bidimensional (vulnerabilidad y pasividad) present&oacute; mejores indicadores de ajuste <i>(X<sup>2</sup> </i>= 36.60, <i>gl </i>= 19, <i>p </i>= 0.009; <i>X<sup>2</sup>/gl </i>= 1.92; <i>CFI </i>= 0.98; <i>AGFI </i>= 0.96; <i>RMSEA </i>= 0.04 IC 90 &#91;0.02 - 0.06&#93;; <i>SRMR </i>= 0.04; <i>AIC </i>= 70.60) que el unidimensional (X<sup>2</sup> = 290.42, <i>gl </i>= 20, <i>p </i>= 0.000; <i>X<sup>2</sup>/gl </i>= 15.27; <i>CFI </i>= 0.48; AGFI = 0.75; <i>RMSEA </i>= 0.27 IC 90 &#91;0.20 - 0.25&#93;; <i>SRMR </i>= 0.16; <i>AIC </i>= 337.42). Las dificultades en las habilidades sociales explican una parte significativa de la varianza de los reportes de victimizaci&oacute;n en ambos sexos (hombres: <i>R<sup>2</sup> </i>= 0.20, <i>f<sup>2 </sup>= </i>0.25; mujeres: R<sup>2</sup> = 0.24, <i>f<sup>2</sup> = </i>0.32). <b>Conclusi&oacute;n. </b>La escala posee propiedades psicom&eacute;tricas que permiten su utilizaci&oacute;n en la medici&oacute;n de dificultades en habilidades sociales para afrontar la agresi&oacute;n por pares.</p>     <p><b><i>Palabras clave: </i></b>Habilidades sociales, validez de la prueba, acoso escolar.</p> <hr>     <p><font size="3"><b>Abstract</b></font></p>     <p><b>Objective. </b>Determine the psychometric properties of a scale to measure social skills difficulties in handling peer aggression. <b>Method. </b>502 Mexican students participated in the study of which 279 were boys (M = 10.52, <i>DE </i>= 1.13 years) and 223 girls <i>(M </i>= 10.81, <i>DE </i>= 1.25 years). The study compared the empirical adjustment of two measurement models (one-dimensional and two-dimensional) to measure social skills difficulties associated with victimization by peers and establish evidence of concurrent validity of the scale to investigate the relationship of their scores with reports of victimization. <b>Results. </b>It was found that the measurement model comprised of two dimensions (vulnerability and passivity) has better indicators of adjustment (X<sup>2</sup> = 36.60, <i>df </i>= 19, <i>p </i>= 0.009; <i>X<sup>2</sup>/df </i>= 1.92; <i>CFI </i>= 0.98; <i>AGFI </i>= 0.96; <i>RMSEA </i>= 0.04 CI 90 &#91;0.02 - 0.06&#93;; <i>SRMR </i>= 0.04; <i>AIC </i>= 70.60) with respect to a dimension for both (X<sup>2</sup> = 290.42, <i>df </i>= 20, <i>p </i>= 0.000; <i>X<sup>2</sup>/df </i>= 15.27; <i>CFI </i>= 0.48; <i>AGFI </i>= 0.75; <i>RMSEA </i>= 0.27 CI 90 &#91;0.20 - 0.25&#93;; <i>SRMR </i>= 0,16; <i>AIC </i>= 337,42). The difficulties in developing social skills explain a significant part of the variance of the reports of victimization of both students (men: <i>R<sup>2</sup> </i>= 0.20, <i>f<sup>2</sup>= </i>0.25; women: R<sup>2</sup> = 0.24, <i>f<sup>2</sup>= </i>0.32). <b>Conclusion. </b>The scale has psychometric properties that allow its use in measuring social skills difficulties to face peer aggression.</p>     <p><b><i>Keywords: </i></b>Social skills, validity of tests, bullying.</p> <hr>     <p><font size="3"><b>Resumo</b></font></p>     <p><b>Escopo. </b>Estabelecer as propriedades psicom&eacute;tricas de uma escala para medir dificuldades nas habilidades sociais para afrontar a agress&atilde;o por pares. <b>Metodologia. </b>Participaram 502 estudantes mexicanos de educa&ccedil;&atilde;o prim&aacute;ria, 279 crian&ccedil;as masculinas <i>(M </i>= 10.52, <i>DE </i>= 1.13 a&ntilde;os) e 223 femininas <i>(M </i>= 10.81, <i>DE </i>= 1.25 a&ntilde;os). Foi comparado o ajuste emp&iacute;rico de dois modelos (unidimensional e bidimensional), e foi determinada a validez concorrente da escala ao indagar a rela&ccedil;&atilde;o de suas pontua&ccedil;&otilde;es com reportes de vitimiza&ccedil;&atilde;o. <b>Resultados. </b>O modelo bidimensional (vulnerabilidade e passividade) apresentou melhores indicadores de ajuste (X<sup>2</sup> = 36.60, <i>gl </i>= 19, <i>p </i>= 0.009; <i>X<sup>2</sup>/gl </i>= 1.92; <i>CFI </i>= 0.98; AGFI = 0.96; <i>RMSEA </i>= 0.04 IC 90 &#91;0.02 - 0.06&#93;; <i>SRMR </i>= 0.04; <i>AIC </i>= 70.60) que o unidimensional (X<sup>2</sup> = 290.42, <i>gl </i>=20, <i>p </i>= 0.000; <i>X<sup>2</sup>/gl </i>= 15.27; <i>CFI </i>= 0.48; AGFI = 0.75; <i>RMSEA </i>= 0.27 IC 90 &#91;0.20 - 0.25&#93;; <i>SRMR </i>= 0.16; <i>AIC </i>= 337.42). As dificuldades nas habilidades sociais explicam uma parte significativa da varia&ccedil;&atilde;o dos reportes de vitimiza&ccedil;&atilde;o em ambos sexos (homens <i>R<sup>2 </sup></i>= 0.20, <i>f<sup>2</sup> = </i>0.25; mulheres R<sup>2</sup> = 0.24, <i>f<sup>2</sup> = </i>0.32). <b>Conclus&atilde;o. </b>A escala possui propriedades psicom&eacute;tricas que permitem sua utiliza&ccedil;&atilde;o na medi&ccedil;&atilde;o de dificuldades nas habilidades sociais para afrontar a agress&atilde;o por pares.</p>     <p><b><i>Palavras chave: </i></b>Habilidades sociais, valida&ccedil;&atilde;o da prova, acosso escolar.</p> <hr>     <p><font size="3"><b>Introducci&oacute;n</b></font></p>     <p>En M&eacute;xico se ha producido una creciente atenci&oacute;n en el estudio de la frecuencia y las consecuencias negativas de la violencia escolar entre iguales en la adaptaci&oacute;n psicosocial de los estudiantes, especialmente en las v&iacute;ctimas (Castillo y Pacheco, 2008; Haro, Garc&iacute;a y Reidl, 2013; Instituto Nacional de Evaluaci&oacute;n Educativa &#91;INEE&#93;, 2007; Vald&eacute;s y Carlos, 2014). Investigaciones en el tema han encontrado que la experiencia de un ni&ntilde;o de ser v&iacute;ctima de agresi&oacute;n por los pares se asocia con menor bienestar psicol&oacute;gico (Brockenbrough, Cornell y Loper, 2002; Kochenderfer-Ladd, 2003), mayor incidencia de problemas internalizantes, como depresi&oacute;n (Batsche y Knoff, 1994; Carney, 2008), e incluso con riesgo de suicidio (Holt y Espegale, 2007; Smith, Talamelli, Cowie, Naylor y Chauhan, 2004).</p>     ]]></body>
<body><![CDATA[<p>Los agresores dirigen su acci&oacute;n hacia pares con escasa aceptaci&oacute;n social (D'Esposito, Blake y Riccio, 2011; Est&eacute;vez, Mart&iacute;nez y Jim&eacute;nez, 2009; Fox y Boulton, 2005; Mart&iacute;nez, Musitu, Amador y Monreal, 2010; Perry, Hodges y Egan, 2001) y con vulnerabilidades asociadas a rasgos f&iacute;sicos (Card y Hodges, 2008; Kaukiainen, Salmivalli, Lagerspetz y Tamminen, 2002) o psicol&oacute;gicos (Est&eacute;vez, Mart&iacute;nez y Musitu, 2006; Hunter, Boyle y Warden, 2007; Kokkinos y Kipritsi, 2012). Existe evidencia de que los estudiantes que cuentan con pocos recursos psicol&oacute;gicos para afrontar y detener a los agresores tienden a convertirse en v&iacute;ctimas constantes de los agresores (Cava, Musitu, Buelga y Murgui, 2010; Fox y Boulton, 2006; Hoglund y Leadbeater, 2007). Ahora bien, uno de los aspectos a los que se les ha brindado menor atenci&oacute;n en la comunidad cient&iacute;fica son las caracter&iacute;sticas de los ni&ntilde;os que aumentan el riesgo de que sean v&iacute;ctimas de las agresiones de pares y que les dificultan afrontar esta violencia de forma efectiva.</p>     <p>El afrontamiento efectivo de situaciones estresantes, como la victimizaci&oacute;n, resulta de la combinaci&oacute;n de factores personales, familiares, escolares y comunitarios (Jensen-Cambell, Knack, Waldrip y Ram&iacute;rez, 2009; Riley y Masten, 2005).</p>     <p>Las habilidades sociales, uno de los factores que aumentan la resiliencia a las agresiones de pares, permiten a los ni&ntilde;os solucionar los conflictos e integrarse de forma efectiva a sus grupos de socializaci&oacute;n (Dill, Vernberg, Fonagy y Templow, 2004; Gresham, 1986; McFall's, 1982; Nilsen, Karevold, Gustavson y Mathiesen, 2012; O'Dougherty, Masten y Narayan, 2013).</p>     <p>La perspectiva contextual sostiene que las habilidades sociales permiten no solo maximizar los refuerzos en situaciones relacionales espec&iacute;ficas (Merrel y Gimpel, 1998), sino que tambi&eacute;n facilitar la integraci&oacute;n social en los grupos, las relaciones de amistad y la resoluci&oacute;n funcional de conflictos interpersonales (Gresham, 2002; Jones, 2014; Spence, 1995; Vaughn y Hogan, 1990). El desarrollo de conductas socialmente asertivas en los ni&ntilde;os est&aacute; condicionado por caracter&iacute;sticas de sus contextos familiares, escolares y sociales que favorecen o inhiben su expresi&oacute;n (Spence, 1995; Stump, Ratliff y Hawley, 2009).</p>     <p>En relaci&oacute;n con la victimizaci&oacute;n, existe evidencia de que los ni&ntilde;os con dificultades en las habilidades sociales presentan problemas para integrarse socialmente a los grupos de iguales y resolver conflictos interpersonales, lo cual aumenta el riesgo de que sean v&iacute;ctimas de agresiones por parte de los pares (Beran, 2009; Crick y Bigbee, 1998; Dodge, Bates y Pettit, 1990; Fox y Boulton, 2006; Kochenderfer-Ladd y Skinner, 2002; McFall's, 1992).</p>     <p>Aunque los hallazgos mencionados sugieren que las dificultades en el desarrollo de habilidades sociales para afrontar la agresi&oacute;n aumentan la vulnerabilidad de los estudiantes de ser victimizados, existen escasos estudios en M&eacute;xico en los que se describen indicadores psicom&eacute;tricos de instrumentos para medir el constructo. Por este motivo, el presente estudio tuvo como objetivo establecer las propiedades psicom&eacute;tricas en estudiantes de primaria de una adaptaci&oacute;n realizada por Vald&eacute;s, Reyes y Carlos (2014) de la escala DHS-AP desarrollada por Fox y Boulton (2005) para medir dificultades en las habilidades sociales para afrontar la agresi&oacute;n por pares.</p>     <center><a name="f1"><img src="img/revistas/pepsi/v14n2/v14n2a06f1.jpg"></a></center>     <p>Esta escala fue seleccionada porque su dise&ntilde;o se fundamenta en un marco te&oacute;rico contextual para el an&aacute;lisis de las habilidades sociales, lo que se manifiesta en su inter&eacute;s por indagar de forma particular estas habilidades en los estudiantes para el manejo de situaciones que involucran agresiones por parte de pares. Tambi&eacute;n se consider&oacute; el hecho de que se trata de un instrumento que requiere poco tiempo para su administraci&oacute;n, lo que facilita su utilizaci&oacute;n con fines de diagn&oacute;stico e investigaci&oacute;n en ni&ntilde;os de educaci&oacute;n primaria (De Vellis, 2012; Veloso, De Lucena, Santos, Gouveia y Cavalcanti, 2010).</p>     <p>En su adaptaci&oacute;n, los autores retoman 8 de los 20 &iacute;tems de la escala original, al decidir no incluir los &iacute;tems con confiabilidad menor a 0.20 (p. ej., cinco &iacute;tems fueron excluidos: &quot;Peleo cuando me agreden&quot;) y los que no diferenciaban a estudiantes con y sin reportes de victimizaci&oacute;n por pares (p. ej.: siete &iacute;tems fueron excluidos: &quot;Hablo en voz muy baja&quot;). El an&aacute;lisis factorial exploratorio con el m&eacute;todo de estimaci&oacute;n de m&aacute;xima verosimilitud y rotaci&oacute;n oblimin <i>(KMO </i>= 0.83; <i>X<sup>2</sup> </i>= 1257.1, <i>p </i>&lt; 0.000; varianza explicada = 67.7%) reporta un modelo de medici&oacute;n en el que los &iacute;tems se agrupan en dos dimensiones: (a) vulnerabilidad, involucra conductas que denotan debilidad y fragilidad que conducen a que los agresores perciban como poco riesgosa su conducta violenta (Crick y Bigbee, 1998; D'Esposito et al., 2011; Hupp, LeBlanc y Warnes, 2009; Sijtsema, Veenstra, Linderberg y Salmivalli, 2009; Toblin, Schwartz, Hopmeyer y Abou-Ezeddine, 2005); y (b) pasividad, respuestas poco asertivas ante las agresiones de los pares que refuerzan las ganancias instrumentales y sociales de los agresores (Hoglund y Leadbeater, 2007; Kochenderfer y Ladd, 1997).</p>     <p>En primer lugar, el estudio se propuso comparar el ajuste emp&iacute;rico de la estructura interna de tipo unidimensional, sugerido por Fox y Boulton (2005), con otra bidimensional propuesta en la adaptaci&oacute;n de este instrumento realizada por Vald&eacute;s et al. (2014; ver <a href="#f1">figura 1</a>). En segundo lugar, se indagaron las evidencias de validez concurrente del instrumento al determinar la relaci&oacute;n de sus puntajes con los reportes de los estudiantes v&iacute;ctimas de agresi&oacute;n por parte de sus pares.</p>     ]]></body>
<body><![CDATA[<p>Teniendo en cuenta que el modelo de medici&oacute;n bidimensional presenta solidez te&oacute;rica al visualizar las habilidades sociales como un constructo complejo (Angelico, Crippa y Loureiro, 2013; Stump et al., 2009; Taub y Pearrow, 2013) y que existen reportes acerca de la validez de su estructura interna (Vald&eacute;s et al., 2014), en este estudio se parte de la hip&oacute;tesis de que el modelo de medici&oacute;n bidimensional de la escala DHS-AP presenta mejor sustentabilidad emp&iacute;rica que el modelo unidimensional. Tambi&eacute;n se sostiene la hip&oacute;tesis de que las dificultades en las habilidades sociales se relacionan de forma positiva y explican una parte significativa de los reportes de victimizaci&oacute;n en ni&ntilde;os de educaci&oacute;n primaria agredidos por pares.</p>     <p><font size="3"><b>M&eacute;todo</b></font></p>     <p><b>Participantes</b></p>     <p>Se seleccionaron intencionalmente 437 estudiantes de 23 escuelas primarias p&uacute;blicas urbanas, de clase socioecon&oacute;mica media baja de un municipio del noroeste de M&eacute;xico, inscritos en el curso escolar enero-junio 2015. Los instrumentos fueron diligenciados por la totalidad de los participantes. En el momento en que se realiz&oacute; la investigaci&oacute;n, 117 estudiantes estaban cursando cuarto a&ntilde;o (27.08%); 166, quinto a&ntilde;o (38.43%), y 149, sexto a&ntilde;o de educaci&oacute;n b&aacute;sica (34.49%). De la muestra, 252 (57.66%) eran hombres (M = 10.52, <i>DE </i>= 1.13 a&ntilde;os) y 185 (43.34%) mujeres (M = 10.81, <i>DE </i>= 1.25 a&ntilde;os).</p>     <p><b>Instrumentos</b></p>     <p><b>Dificultades en habilidades sociales para el manejo de las agresiones por pares (DHS-AP).</b></p>     <p>Se utiliz&oacute; la adaptaci&oacute;n desarrollada por Vald&eacute;s et al. (2014) de la escala propuesta por Fox y Boulton (2005). En esta versi&oacute;n, los autores incluyeron solo 8 de los 20 &iacute;tems que conforman la escala original. Como se mencion&oacute; anteriormente, se excluyeron 5 &iacute;tems por presentar una confiabilidad menor a 0.20 y otros 7 &iacute;tems por no discriminar a estudiantes con y sin reportes de victimizaci&oacute;n por pares.</p>     <p>En las instrucciones se solicit&oacute; a los estudiantes que seleccionaran la opci&oacute;n que mejor representara la frecuencia con que presentaban las conductas descritas en la escala. El instrumento se respondi&oacute; mediante una escala tipo Likert con cinco opciones de respuesta que oscilaron desde 0 (<i>nunca) </i>hasta 5 <i>(siempre).</i></p>     <p><b>Victimizaci&oacute;n por pares.</b></p>     <p>Se utiliz&oacute; el instrumento de Vald&eacute;s y Carlos (2014), que mide con nueve &iacute;tems (p. ej.: &quot;Me pegan, me dicen sobrenombres ofensivos&quot;) la frecuencia de victimizaci&oacute;n por parte de pares durante el &uacute;ltimo mes. Se utiliz&oacute; una escala tipo Likert con cinco opciones de respuesta: 0 (<i>nunca), </i>1 <i>(casi nunca: </i>1 - 2 ocasiones), 2 <i>(a veces: </i>3 - 5 ocasiones), 3 <i>(frecuentemente: </i>5 - 10 ocasiones) y 4 <i>(siempre: </i>m&aacute;s de 10 ocasiones). Mediante un an&aacute;lisis factorial confirmatorio con el m&eacute;todo de estimaci&oacute;n de m&aacute;xima verosimilitud se estableci&oacute; la sustentabilidad emp&iacute;rica de una estructura unidimensional en la escala (X <sup>2</sup> = 69.72, <i>p </i>= 0.08; <i>X<sup>2</sup>/gl = </i>1.47; <i>CFI </i>= 0.96; <i>RMSEA </i>= 0.04, <i>IC </i>90 &#91;0.02 - 0.07&#93;). Su confiabilidad medida con el alfa de Cronbach fue de 0.87.</p>     ]]></body>
<body><![CDATA[<p><b>Procedimiento</b></p>     <p>Se explic&oacute; a las autoridades de las escuelas el objetivo de la investigaci&oacute;n y se solicit&oacute; su autorizaci&oacute;n para acceder a las aulas. Participaron en el estudio los ni&ntilde;os cuyos padres dieron su consentimiento informado por escrito. A los estudiantes se les invit&oacute; a participar de forma voluntaria y se garantiz&oacute; la confidencialidad de la informaci&oacute;n. Para que las escuelas se beneficiaran de su apoyo se les entreg&oacute; la versi&oacute;n final del instrumento con un instructivo acerca de c&oacute;mo administrarlo e interpretarlo.</p>     <p><b>An&aacute;lisis de los datos</b></p>     <p>La verificaci&oacute;n del ajuste emp&iacute;rico de ambos modelos se realiz&oacute; mediante un an&aacute;lisis factorial confirmatorio con el m&eacute;todo de ecuaciones estructurales con apoyo del <i>software </i>AMOS 5. Para determinar la relaci&oacute;n de los puntajes de la escala con los reportes de victimizaci&oacute;n se utiliz&oacute; una prueba de regresi&oacute;n lineal m&uacute;ltiple con apoyo del SPSS 22.</p>     <p><b>Resultados</b></p>     <p><b>Dimensionalidad del modelo</b></p>     <p>Se compar&oacute; el ajuste emp&iacute;rico de los modelos unidimensional y bidimensional por medio de un an&aacute;lisis factorial confirmatorio con el m&eacute;todo de estimaci&oacute;n de m&aacute;xima verosimilitud. Este m&eacute;todo se utiliz&oacute; puesto que no se encontraron casos extremos en la muestra (se determin&oacute; mediante el estad&iacute;stico D<sup>2</sup>, cuyos valores de probabilidad asociada fueron no significativos en todos los casos), y se verific&oacute;, con el estad&iacute;stico de Mardia <i>(CR </i>= 4.85), la presencia de normalidad multivariada en los datos (Bentler, 2005). El an&aacute;lisis de los &iacute;ndices de ajuste sugiere que el modelo de medici&oacute;n de dos factores presenta mejor sustentabilidad emp&iacute;rica con respecto al modelo unidimensional (Blunch, 2013; Byrne, 2010; Cea, 2004; ver <a href="#t1">tabla 1</a>).</p>     <center><a name="t1"><img src="img/revistas/pepsi/v14n2/v14n2a06t1.jpg"></a></center>     <p>En el modelo unidimensional, cuatro coeficientes de regresi&oacute;n no resultaron significativos, lo cual indica que no se agrupan en el constructo en que lo hacen los dem&aacute;s indicadores. Sin embargo, en el modelo de dos dimensiones todos los coeficientes de regresi&oacute;n se relacionaron de forma significativa con los factores establecidos en el modelo (ver <a href="#f2">figura 2</a>), lo que muestra la pertinencia del constructo subyacente. Es necesario puntualizar que la covarianza entre los factores no fue significativa, por ello se infiere que se trata de dimensiones independientes que deben ser tratadas por separado en la investigaci&oacute;n del constructo. La confiabilidad de los puntajes en vulnerabilidad (&alpha; = 0.86) y pasividad (&alpha; = 0.83) fue aceptable.</p>     <center><a name="f2"><img src="img/revistas/pepsi/v14n2/v14n2a06f2.jpg"></a></center>     ]]></body>
<body><![CDATA[<p><b>Validez concurrente de los puntajes</b></p>     <p>Se determin&oacute; la validez concurrente de los puntajes del modelo bidimensional mediante el an&aacute;lisis de la correlaci&oacute;n de sus puntajes con los reportes de los estudiantes de victimizaci&oacute;n por parte de los pares. Se encontr&oacute; que en las ni&ntilde;as ambos factores se relacionaron de forma positiva con los reportes de ser v&iacute;ctimas de agresi&oacute;n por pares, mientras que en los ni&ntilde;os la vulnerabilidad se relacion&oacute; de forma positiva &uacute;nicamente con este tipo de agresi&oacute;n (ver <a href="#t2">tabla 2</a>).</p>     <center><a name="t2"><img src="img/revistas/pepsi/v14n2/v14n2a06t2.jpg"></a></center>     <p>Los resultados del an&aacute;lisis de regresi&oacute;n muestran que tanto en ni&ntilde;os (R<sup>2</sup> = 0.20, <i>f<sup>2</sup> = </i>0.25) como en ni&ntilde;as <i>(R<sup>2</sup> </i>= 0.24, <i>f<sup>2</sup>= </i>0.32) el modelo explica una parte significativa de los reportes de victimizaci&oacute;n por parte de los pares y posee un tama&ntilde;o del efecto moderado. En ambos sexos la dimensi&oacute;n de vulnerabilidad se relaciona de forma m&aacute;s importante con los reportes de agresi&oacute;n por pares (ver <a href="#t3">tabla 3</a>).</p>     <center><a name="t3"><img src="img/revistas/pepsi/v14n2/v14n2a06t3.jpg"></a></center>     <p><font size="3"><b>Discusi&oacute;n</b></font></p>     <p>Los resultados sostienen la hip&oacute;tesis de que el modelo de dos factores (vulnerabilidad y pasividad) se ajusta mejor que el modelo unidimensional en la medici&oacute;n de dificultades en habilidades sociales para el manejo de la agresi&oacute;n por pares. Esto coincide con lo reportado en la literatura en la que se refiere que las habilidades sociales constituyen un constructo complejo que se integra por un subconjunto de habilidades de distinta naturaleza (Angelico et al., 2013; Stump et al., 2009; Taub y Pearrow, 2013).</p>     <p>Las propiedades psicom&eacute;tricas de la escala se fortalecen por su validez concurrente, ya que explica una parte significativa de la varianza en los reportes de victimizaci&oacute;n por pares de los ni&ntilde;os y las ni&ntilde;as. Este hallazgo es consistente con otros estudios que se&ntilde;alan que los estudiantes v&iacute;ctimas de violencia se caracterizan por no poseer un adecuado desarrollo de habilidades sociales que les permitan hacer frente a las agresiones de los pares (Aoki, 2014; Fox y Boulton, 2006; Habashy, 2013; Hupp et al., 2009; Perry, Willard y Perry, 1990; Swearer y Hymel, 2015). Una hip&oacute;tesis para explicar el hallazgo anterior es que los comportamientos que implican tanto vulnerabilidad como pasividad refuerzan de forma directa o indirecta las ganancias psicol&oacute;gicas de la conducta del agresor, la cual se asocia con el logro de poder y control sobre la v&iacute;ctima (Hanish y Guerra, 2004; Salmivalli y Nieminen, 2002).</p>     <p>Es necesario resaltar que la relaci&oacute;n de las dimensiones del instrumento con los reportes de victimizaci&oacute;n es distinto en los ni&ntilde;os, lo que sugiere diferencias asociadas al sexo en la relaci&oacute;n entre las dificultades en las habilidades sociales para afrontar las agresiones y la frecuencia de victimizaci&oacute;n por pares. Entre tanto, los puntajes de las ni&ntilde;as se asocian de forma significativamente positiva, en ambas dimensiones, con ser v&iacute;ctimas de agresiones por pares; en los ni&ntilde;os esta relaci&oacute;n se encuentra &uacute;nicamente con la dimensi&oacute;n de vulnerabilidad. De lo anterior se infiere que el comportarse de forma pasiva ante las agresiones de los pares tiene efectos diferentes en ambos sexos, pues si bien en los ni&ntilde;os no aumenta el riesgo a ser victimizados, en las ni&ntilde;as s&iacute; lo hace. Aunque se debe realizar mayor investigaci&oacute;n para comprender este hallazgo, este resultado sugiere la necesidad de incorporar la perspectiva de sexo en el estudio del fen&oacute;meno de la violencia entre estudiantes (Navarro, Larra&ntilde;aga y Yubero, 2013).</p>     <p>Por otra parte, los resultados del estudio reafirman la pertinencia del enfoque contextual en el an&aacute;lisis de habilidades sociales relacionadas con la victimizaci&oacute;n por pares, al constatarse que un instrumento desarrollado en este marco te&oacute;rico presenta propiedades psicom&eacute;tricas adecuadas para ser utilizado en la medici&oacute;n del constructo. Se infiere tambi&eacute;n el valor de considerar la perspectiva de sexo en el an&aacute;lisis de la violencia escolar y, en particular, del fen&oacute;meno de la victimizaci&oacute;n.</p>     ]]></body>
<body><![CDATA[<p>Los hallazgos reafirman la importancia de que, como parte de los programas de prevenci&oacute;n de la violencia escolar, se lleven a cabo acciones dirigidas a favorecer en los ni&ntilde;os el desarrollo de habilidades sociales que les permitan manejar de forma m&aacute;s efectiva la violencia por parte de los pares y, con ello, contribuir a la prevenci&oacute;n de problemas de victimizaci&oacute;n cr&oacute;nica y sus consecuencias negativas en el desarrollo cognitivo y socioemocional.</p>     <p>A pesar de que se evidencia que la escala es un instrumento valioso en la medici&oacute;n del constructo, se sugiere que otras investigaciones la ampl&iacute;en de tal forma que eval&uacute;e otras dificultades en las habilidades sociales asociadas al manejo de la agresi&oacute;n por pares, tales como las que obstaculizan la integraci&oacute;n de los ni&ntilde;os a grupos y aquellas vinculadas con la obtenci&oacute;n de apoyo social para detener las agresiones (Erah, Flanagan y Bierman, 2008; Jenkins y Kilpatrick, 2012; You y Bellmore, 2012). Se se&ntilde;ala, del mismo modo, que en la muestra del estudio solamente se incluyeron estudiantes de estratos socioecon&oacute;micos medios y bajos de escuelas p&uacute;blicas urbanas, lo cual hace necesario actuar con cautela cuando el instrumento se utilice para evaluar este constructo en otros grupos, como en estudiantes de clase alta o en aquellos en situaci&oacute;n de pobreza extrema.</p>     <p>Por otro lado, ser&iacute;a conveniente elaborar instrumentos para evaluar las dificultades en habilidades sociales de los agresores, de tal manera que se pueda fortalecer la convivencia arm&oacute;nica entre pares (Fox y Boulton, 2005) y contribuir de manera integral a la soluci&oacute;n del problema (Ahmed y Braithwaite, 2004; Ortega y Del Rey, 2008).</p>     <p>Se resalta que estos resultados no sugieren que los ni&ntilde;os sean responsables de ser victimizados por los pares, ya que es el apoyo social que reciben en sus contextos familiares y escolares lo que facilita o no la expresi&oacute;n de estas habilidades sociales. Esto abre la necesidad de indagar acerca de c&oacute;mo las caracter&iacute;sticas de los contextos familiares y escolares favorecen la presencia de dificultades en las habilidades sociales en los ni&ntilde;os para afrontar la agresi&oacute;n de los pares (Hartas, 2011; Nation, Vieno, Perkins y Santinello, 2008; Taub y Pearrow, 2013).</p> <hr>     <p><font size="3"><b>Referencias</b></font></p>     <!-- ref --><p>Ahmed, E. &amp; Braithwaite, V. (2004). &quot;What, Me Ashamed?&quot; Shame Management and School Bullying. <i>Journal of Research in Crime and Delinquency, 4</i>1, 269-294. doi: 10.1177/0022427804266547&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5194653&pid=S1657-8961201600020000600001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p>Angelico, A., Crippa, J. &amp; Loureiro, S. (2013). Social Anxiety Disorder and Social Skills: A Critical Review of the Literature. <i>The International Journal of Behavioral Consultation Therapy, </i>7(4), 16-23.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5194654&pid=S1657-8961201600020000600002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     <!-- ref --><p>Aoki, S. (2014). <i>Understanding Isolated and Non-Isolated Victims of Peer Victimization in Middle School </i>(Tesis doctoral no publicada). Columbia, University, EUA.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5194656&pid=S1657-8961201600020000600003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     ]]></body>
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