Neuropsychology, Vol 37(3), Mar 2023, 330-343; doi:10.1037/neu0000849
… To describe the steps of ensuring measurement fidelity of core clinical measures in a five-country study on brain signatures of obsessive–compulsive disorder (OCD). … We collected data using standardized instruments, which included the Yale–Brown Obsessive–Compulsive Scale (YBOCS), the Dimensional YBOCS (DYBOCS), the Brown Assessment of Beliefs Scale (BABS), the 17-item Hamilton Depression Scale (HAM-D), the Hamilton Anxiety Scale (HAM-A), and the Structured Clinical Interview for DSM-5 (SCID). Steps to ensure measurement fidelity included translating instruments, developing a clinical decision manual, and continuing reliability training with 11–13 transcripts of each instrument by 13 independent evaluators across sites over 4 years. …