[en] This research has been carried out with the aim of proving to what extent are there children who show parental detachment towards their progenitors, and that being the case, which are the reasons that have led to such situation, taking into account their parents' behaviour. Firstly, a theoretical review of the false Parental Alienation Syndrome was performed, with the aim of knowing several of the family reasons and situations that make minors feel rejection towards at least one of their biological parents. Secondly, Machiavellianism was studied, focusing on understanding the behavior of those parents who arouse in their children the wish to distance themselves from them, or directly the rejection of their children towards them. Lastly, relating the two previous questions, it was performed a theoretical review of attachment, which is the main aim of this study. The research took place in school centres at national level, with the participation of 3000 minors, whose mean age was 11,32. Socio-demographical data was gathered, as well as the answers to the following questions: if they loved their parents, if they thought that they should always tell them the truth and if their want was being always with them. Furthermore, an ad hoc children's preferences scale was developed for this research. The results of the attachment that the children felt towards their parents showed that 4,7% of the children express to not love them, 5,2% to not keep in touch with them, 9,8% did not consider important the fact of telling them the truth and 2,5% answered these three questions negatively. On the one hand, four factors on the father's behaviour towards children were identified, correlating the father's attitude towards homework assignment, willingness to assist and positive control on the minor, negative control and excessive concern, and lack of communication. On the other hand, the four factors identified regarding the mother's behaviour towards children are in line with the actions of control on homework, negative control and excessive concern, assistance with excessive control and lack of communication. It is verified that showing assistance towards children, appropriate control and communication, are the main factors for a positive attachment. Limitations of this study towards further research are highlighted.

[gl] Esta investigación levouse a cabo co obxectivo de demostrar en que hai nenos que mostran un destacamento cara aos seus pais e, en caso afirmativo, cales son os motivos que levaron a unha situación semellante ao comportamento deste último. En primeiro lugar, fíxose unha revisión teórica sobre a falsa síndrome de alienación parental, co obxectivo de coñecer varias das razóns e situacións familiares que fan que os menores sintan rexeitamento cara a polo menos un dos seus pais. En segundo lugar, estudouse o maquiavelismo, centrado na comprensión do comportamento daqueles pais que provocan o desexo de afastarse ou o rexeitamento dos seus fillos cara a eles. Finalmente, relacionado cos dous números anteriores, fíxose unha revisión teórica sobre o apego, que é o principal obxectivo deste estudo. A parte empírica da investigación levouse a cabo en escolas de todo o país, cunha participación de 3000 nenos, cuxa idade media era de 11,32 anos. Recolléronse informacións sobre os datos sociodemográficos, así como as respostas das seguintes preguntas: se querían aos seus pais, se pensaban que sempre debían dicirlles a verdade e se o seu desexo era sempre estar con eles. Ademais, desenvolveuse unha escala ad hoc de preferencia infantil para esta investigación. Os resultados sobre o apego sentido polos nenos aos seus pais, mostraron que o 4,7% dos nenos expresou que non os amaba, o 5,2% non mantivo contacto con eles, o 9,8 non considerou importante dicirlles a verdade e o 2,5% responden negativamente ás tres preguntas. Pos unha banda, identificáronse catro factores sobre o comportamento do pai cara aos nenos que correspondían a actitude do pai cara as tarefas escolares, á disposición de axudar e ao control positivo do neno, ao control negativo e á preocupación excesiva e á falta de comunicación. Compróbase que mostrar axuda para os nenos, un control e unha comunicación adecuados son os principais motivos para un apego positivo. Destácanse as limitacións do estudo cara a futuras investigacións.