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A generalização do uso das redes sociais online, tem trazido oportunidades e constrangimentos ao mesmo tempo-ou até mais depressa-que a investigação e o conhecimento sobre este tópico. Neste trabalho, pretendemos explorer o papel de variáveis pessoais e psicossociais no uso do Facebook, recorrendo a um conjunto de questionários de autorrelato junto de uma amostra de 386 adolescentes portugueses. Os resultados obtidos permitem verificar diferenças na utilização em função do género, uma relação positiva com a idade, a autorregulação e autoestima, sendo a interação com pares da sua rede de contactos offline o mais forte preditor para o uso das redes sociais. Estes dados sugerem o papel desta aplicação como um meio para manter o contacto com os pares., The widespread use of social networks has brought opportunities and constraints at the same time, even faster than research and knowledge on this topic. In this paper, we intend to explore the role of personal and psychosocial variables in Facebook use, considering a set of self-report questionnaires to a sample of 386 Portuguese adolescents. We found gender differences in social network use, a positive relationship with age, self-regulation and self-esteem, with peer interaction with offline contacts as the strongest predictor for social network use. These data suggest the role of this application as a mean to maintain contact with peers.

Alcohol is an addictive substance that is integrated and normalized indifferentcultural contexts, and therefore has different forms of social representation. These haveevolved significantly over the years, as evidenced by the changing consideration ofalcohol as avice to a disease in developed societies over the last fifty years. Socialrepresentation is considered to be a way of building and interpret in reality and ofintegrating collective beliefs. However, a leitmotif exists in societies that have traditionallyconsumed alcohol, characterized by a great permissiveness that leads to increasedconsumption. We have reviewed some works that analyze these issues and in conclusion,we point out that social representation is a modifiable construct that may be used as apreventive action in alcohol consumption in thegeneral population and more specifically,in experimental consumption amongst young people.

No presente trabalho apresentam-se os estudos de adaptação do Questionário Reduzido de Auto-regulação (Carey, Neal & Collins, 2004), um instrumento que permite a avaliação do Controlo de impulsos e Estabelecimento de objectivos. Na análise das propriedades psicométricas do questionário foi encontradauma estrutura factorial consistente e valores de fidelidade elevados. É estudada a relação entre auto-regulação, resiliência, com o recurso à Escala de Resiliência (Wagnild & Young, 1993), e consumo de substâncias na adolescência. Os resultados sugerem uma relação entre a auto-regulação e o consumo de substâncias, além de uma correlação elevada entre o estabelecimento de objectivos e a resiliência, e uma correlação moderada entre o controlo de impulsos e a resiliência. As implicações do estudo são discutidas., In the present study are presented the adaptation studies’ of the ShortSelf-regulation Questionnaire (Carey, Neal & Collins, 2004), a measure that allows the adaptation of Impulse control and Goal setting. In the analysis of the psychometric properties of the questionnaire was found a consistent factorial structure and high reliability values. It was also studied the relation between self-regulation, resilience, with the use of the Resilience scale (Wagnild & Young, 1993), and substance use in adolescence. The results suggest a relation between self-regulation and substance use, beyond a high correlation between goal setting and resilience and a moderate correlation between resilience and impulse control. The implications of the study are discussed.