<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-09-14T21:43:55Z</responseDate><request verb="GetRecord" identifier="oai:gredos.usal.es:10366/169153" metadataPrefix="etdms">https://gredos.usal.es/oai/request</request><GetRecord><record><header><identifier>oai:gredos.usal.es:10366/169153</identifier><datestamp>2026-01-23T01:02:25Z</datestamp><setSpec>com_10366_4322</setSpec><setSpec>com_10366_4200</setSpec><setSpec>com_10366_3946</setSpec><setSpec>com_10366_3823</setSpec><setSpec>col_10366_4323</setSpec></header><metadata><thesis xmlns="http://www.ndltd.org/standards/metadata/etdms/1.0/" xmlns:doc="http://www.lyncode.com/xoai" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.ndltd.org/standards/metadata/etdms/1.0/ http://www.ndltd.org/standards/metadata/etdms/1.0/etdms.xsd">
<title>Assessing the Reliability, Dimensions, and Variance of Young's Internet Addiction Test by Applying it to Adolescents at the National Psychiatric Hospital in Costa Rica</title>
<creator>Martín Herrero, José Antonio</creator>
<creator>Fernández Mora, Karla</creator>
<creator>Molina Fernández, Antonio</creator>
<subject>Internet addiction</subject>
<subject>Internet</subject>
<subject>Young’s Internet Addiction Test</subject>
<subject>Adolescence</subject>
<description>[EN]Background: The Internet Addiction Test (IAT) was&#xd;
the first instrument created specifically to assess Internet&#xd;
addiction (IA). Although it was not validated during its creation,&#xd;
its validity has since been confirmed thanks to subsequent&#xd;
studies. The IAT is the first global psychometric measure&#xd;
tested worldwide that has been used in several studies&#xd;
as a research tool. Regarding the dimensions of the IAT,&#xd;
they were not reported by the creator of the test, during the&#xd;
performed factor analysis. Nonetheless, different studies&#xd;
have defined the test as being one-dimensional and others&#xd;
as having three, four, five, and six dimensions.&#xd;
Methods: In the present study, seven dimensions were&#xd;
identified; however, there is still a lack of consensus about&#xd;
the number of dimensions that accurately define this test.&#xd;
Results: Hence, Young’s Internet Addiction Test&#xd;
presents a shortcoming that may be explained by the influence&#xd;
of several factors such as how it was applied, the&#xd;
place where it was applied, and the population to which it&#xd;
was applied. All of these are factors that could be linked to&#xd;
the sociocultural aspects of the adaptations that have been&#xd;
made to the test.&#xd;
Conclusions: Moreover, the first dimension of the IAT&#xd;
found, the loss of self-control, is extremely important be-&#xd;
*Corresponding author details: José A. Martín Herrero, Department of&#xd;
Social Psychology and Anthropology, University of Salamanca (USAL),&#xd;
37008 Salamanca, Spain. E-mail: janmartin@usal.es&#xd;
cause it explains 34% of the variance of the data. However,&#xd;
74% of the variance is explained by applying the 7 dimensions&#xd;
identified in this research. Also, the reliability analysis&#xd;
showed that the IAT is 89% reliable, which indicates&#xd;
that the elements comprising the test used in this research&#xd;
are suitable for measuring the construct of Internet addiction.</description>
<date>2026-01-22</date>
<date>2026-01-22</date>
<date>2024</date>
<type>info:eu-repo/semantics/article</type>
<identifier>Martín Herrero, J. A., Fernández Mora, K., &amp; Molina Fernández, A. (2024). Assessing the Reliability, Dimensions, and Variance of Young’s Internet Addiction Test by Applying it to Adolescents at the National Psychiatric Hospital in Costa Rica. Actas espanolas de psiquiatria, 52(5), 598-606. https://doi.org/10.62641/AEP.V52I5.1845</identifier>
<identifier>1139-9287</identifier>
<identifier>http://hdl.handle.net/10366/169153</identifier>
<identifier>10.62641/AEP.V52I5.1845</identifier>
<identifier>1578-2735</identifier>
<language>eng</language>
<relation>https://actaspsiquiatria.es/index.php/actas/article/view/1845</relation>
<rights>http://creativecommons.org/licenses/by-nc-nd/4.0/</rights>
<rights>info:eu-repo/semantics/openAccess</rights>
<rights>Attribution-NonCommercial-NoDerivatives 4.0 Internacional</rights>
</thesis></metadata></record></GetRecord></OAI-PMH>