Borderline Personality Features Scale for Children-11: Measurement invariance over time and across gender in a community sample of adolescents.

The Borderline Personality Features Scale for Children (BPFS-C) was recently shortened using item response theory to an 11-item version that is optimal for use in epidemiological studies and repeated assessment over time. Only 1 study has examined invariance of the BPFS-C-11 items across gender and no study has done so over time. The present study employed a longitudinal design to address this gap by evaluating measurement invariance across...