The Scales of Independent Behavior-Revised (SIB-R) is a comprehensive, norm-referenced assessment of adaptive and maladaptive behaviors used to determine a person’s level of functioning in key behavior areas. It may be administered in a structured interview or by a checklist procedure. All items appear in each response booklet to facilitate either administration procedure. The SIB-R can be administered using a structured interview procedure or a checklist procedure. The checklist-administration procedure is often preferred when a face-to-face interview is not necessary or practical. These options give examiners maximum flexibility when using the SIB-R.