The document describes the Mini-Mental State Examination (MMSE), a brief cognitive screening test used to detect cognitive impairment. It evaluates several cognitive domains including orientation, registration, attention, recall, and language abilities. Scores of 25-30 are considered normal, 18-24 indicate mild to moderate impairment, and scores of 17 or less correlate with substantial impairment in daily living. The MMSE takes 5-10 minutes to administer and provides an overall assessment of cognitive functioning.