Validação da versão reduzida da escala de comportamento interpessoal para adolescentes Portugueses

This work presents the Portuguese linguistic adaptation of the short version of the Scale for Interpersonal Behavior and the evaluation of its psychometric characteristics using a sample of late adolescents (aged 16 to 21 years; N = 872). An internal organization of four dimensions was found along with a general measure for the two components under evaluation: discomfort while being assertive and frequency of practicing assertive behavior. All measures obtained acceptable internal consistency values and moderate levels of validity based on the relation to other variables, namely the short version of Rathus Assertiveness Scale. Some sex differences were observed. The instrument showed to be useful to be employed for evaluation and research in psychology.