Martín Babarro, Javier

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First Name
Last Name
Martín Babarro
Universidad Complutense de Madrid
Faculty / Institute
Investigación y Psicología en Educación
Psicología Evolutiva y de la Educación
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  • Publication
    Peer likeability and victimization in young adolescents: Moderating effects of descriptive and status group norms for aggression and prosocial behaviour and network density
    (Wiley, 2022-01-14) Aguilar Pardo, David Ricardo; Martínez Fernández, Belén; Colmenares Gil, Fernando; Martín Babarro, Javier
    Introduction. Previous research has shown that peer victimization can be highly responsive to variables at the classroom level. Aggressive and prosocial norms may promote or reduce its status in classrooms. However, yet there is an apparent lack of success to explain which types of norms are more influential. This study examined the role of aggressive and prosocial descriptive and status norms in the peer victimization–status link. It also explores how the network density increases adherence to the prevailing norm in the classroom and its effect on the status of the victims. Method. Data on peer acceptance and rejection, victimization, prosocial behaviour, and aggression were collected with sociometric methods in a sample of 6,600 students (M = 13.1 years, SD = 0.6; 49.2% girls), from 269 classrooms in 81 secondary schools in Spain. Group norms for aggression and for prosocial behaviour were assessed in three ways, the behaviour of all peers (class-norm), the behaviour of most-liked peers (likeability-norm), and the behaviour of most salient peers (visibility-norm). Results. Multilevel regression analyses revealed that the negative impact of victimization on peer likeability was moderated by the classroom’s norm for prosocial behaviour, by the status norm of most visible peers’ norm for prosocial behaviour and for aggression, and by the group’s network density. The behavioural status norms of most likeable peers had no significant effect. Conclusion. These results underscore the overall importance of group context as a moderating factor of the relation between victimization and peer status in adolescents, and add to the growing body of knowledge driven by the socio-ecological approach to the study of peer relations in developmental psychology. As implications for education, these results affect the importance of considering socio-emotional variables in the formation of class groups in order to reduce victimization.
  • Publication
    The Relative Age Effects in Educational Development: A Systematic Review
    (MPDI, 2021-08-26) Urruticoechea, Alar; Oliveri, Andrés; Vernazza, Elena; Gimenez Dasi, Marta Aranzazu; Martínez Arias, Rosario; Martín Babarro, Javier
    There is a large number of variables, studied in the literature, that affect the integral development of students in the educational stage, but few research analyze the effects that relative age can have on development. The aim of this study is to review and summarize the results obtained, on this subject, in recent research. The methodology used has followed the PRISMA declaration. The final sample is composed by 21 articles, which use data from 24 countries and 32 assessments. The main conclusions indicate that relatively younger children in same class groups: (a) obtain significantly lower mean scores in cognitive and motor tests, (b) have a higher repetition rate, and (c) have a less capacity of socialization. Finally, it should be noted that considering the results obtained by the research on relative age effect on child development, some authors propose to adapt educational practices to minimize these effects.