Brief Core Schema Scales (BCSS).42 The BCSS, developed
with nonclinical and psychosis groups, has 24 items
assessing negative and positive beliefs about the self and
others each rated on a 5-point scale (0–4). Higher scores
reflect greater endorsement of items. The subscale of
interest in this study was negative beliefs about self, which
contains 6 items (eg, “I am unloved,” “I am worthless,”
and “I am weak”).