Research has shown a relationship between attachment style and psychosocial adjustment in adolescents. Whereas secure attachment is related to fewer internalizing and externalizing symptoms, the opposite is the case for the various insecure attachment styles. The aim of the two studies reported in this paper was to adapt and validate the CaMir-R (a self-report measure of attachment that has shown adequate psychometric properties) for use among Basque adolescents, and to analyse the relationship between attachment and internalizing and externalizing symptoms. In Study 1, the instrument was adapted using the back translation method and applied to a sample of 203 adolescents and young adults. Confirmatory factor analysis supported the theoretical dimensions of the scale, and its psychometric properties were found to be adequate. In Study 2 we obtained additional validity evidence by applying, in a sample of 786 adolescents and young adults, the attachment representations section of the CaMir-R alongside other measures of attachment and clinical symptoms. The results once again supported the dimensional structure of the instrument, and evidence of convergent validity was obtained based on correlations between CaMir-R scores and scores on the Inventory of Parent and Peer Attachment (IPPA). In addition, scores on the five dimensions of attachment representations (Security, Family concerns, Parental interference, Self-sufficiency and resentment of parents and Childhood trauma) were correlated with scores on other measures of internalizing and externalizing symptoms. Based on these results, we conclude that the Basque version of the CaMir-R is a valid instrument for assessing the quality of attachment representations among adolescents, and also that internalizing and externalizing problems are related to attachment style. We discuss the importance of attachment in relation to behaviour problems and clinical symptoms.
Keywords: CaMir-R; adaptation; adolescence; attachment; internalizing and externalizing symptoms.