CONCLUSIONS: Among the included broad-band instruments, given the evidence of insufficient cross-cultural validity, applying the COSMIN criteria to the CBCL Attention Problems subscale would lead to a recommendation against its use; users outside North America should be cautious. The SDQ Hyperactivity-Inattention subscale demonstrates comparatively favorable measurement properties, though this does not establish its overall superiority for ADHD assessment. Future studies should evaluate content…
