Classification & Assessment in Psychiatry · Paper A
Abbreviated Mental Test Score (AMTS)
Busy wards need a bedside test that flags likely cognitive impairment in a couple of minutes, before arranging a full assessment, and that gap is why the Abbreviated Mental Test Score (AMTS) exists. For example, a junior doctor reviewing a confused older patient overnight can run through ten short questions rather than waiting for a formal cognitive assessment. The AMTS connects orientation, memory and general knowledge questions into one quick screening number rather than a diagnosis.
The AMTS asks ten short questions covering orientation, for example date and place, immediate and short-term memory, such as recalling an address after a delay, and general knowledge, for example the name of the reigning monarch or a well-known historical date. Each correct answer scores one point, giving a total out of ten. A commonly used cutoff flags a score of 6 or less out of 10 as suggestive of cognitive impairment, prompting further, more detailed assessment rather than a definitive diagnosis on its own.
The stem describes an older or acutely unwell patient answering a short set of orientation, memory and general-knowledge questions at the bedside, often with a score out of 10, and asks about interpretation or next steps.
Distinguish the AMTS from the Mini-Mental State ExaminationA brief, widely used bedside test that scores overall cognitive function.Read more → (MMSE): the AMTS is a shorter, ten-item bedside screen mainly used in general hospital and elderly-care settings, while the MMSE is a longer, thirty-point instrument covering more cognitive domains. Distinguish it from a formal neuropsychological assessment, which takes far longer and characterises the pattern of impairment rather than giving a quick screening flag.
Traptreating the AMTS as a diagnostic test for dementia. Resolution: the AMTS is a screening flag; a low score should prompt further assessment, for example delirium screening, not an immediate diagnosis. Trap: assuming a normal AMTS score rules out early cognitive impairment. Resolution: the AMTS is short and can miss mild or early impairment, so a normal score does not exclude it.
When a vignette describes a brief bedside cognitive screen with a numeric score, identify which instrument it is from the item count and content, recall its cutoff, and remember that any screening tool score triggers further assessment rather than standing alone as a diagnosis.