Assessing Measurement Consistency: A Study of the BPFSC Invariance Across Age and Sex in Romanian Adolescents.

The Borderline Personality Feature Scale for Children (BPFSC) is a widely used instrument and currently the only dimensional measure to investigate Borderline Personality features in children and adolescents. The present study aimed to investigate the factor structure and measurement invariance across age and sex in a community sample of 634 adolescents (mean age = 16.72, standard deviation = 1.31). To test for measurement invariance, we conducted multi-group confirmatory factor analysis (MG-CFA). Analysis showed residual invariance across age and sex. Based on the results, we conclude that BPFSC is a valid and reliable instrument to assess Borderline Personality features in adolescents. Implications for evidence-based assessment of Borderline Personality features in adolescence are discussed.