Test designed to assess patients with possible delirium, in particular those who are intubated or unable to speak or write. It assesses 5 neuropsychological domains (orientation, attention, memory, comprehension, and vigilance), emphasizing nonverbal (visual and auditory) modalities. Total scores range from 0 to 30, with higher scores indicating better cognitive function. This test helps to differentiates delirium from other neuropsychiatric conditions, including dementia, schizophrenia, and depression. For more information, see the following article for the test: Hart RP, Levenson JL, Sessler CN, et al. Validation of a cognitive test for delirium in medical ICU patients. Psychosomatics. 1996;37:533-546). [PMID: 8942204]