The BPFS-C is a self-report questionnaire assessing BPD features for youth ages 9–18. The BPFS-C was adapted from the BPD scale of the Personality Assessment Inventory [44] for use in youth. The BPFS-C contains 24 items, which are rated on a 5-point Likert scale (1 = not true at all; 5 = always true). Sample items include “I want to let some people know how much they’ve hurt me,” and “When I’m mad, I can’t control what I do.” The BPFS-C has demonstrated evidence for criterion and concurrent validity [45, 46]. In the current sample, internal consistency was good (α = .89).
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