CLINICIAN'S CAPSULE What is known about the topic? Delirium is frequent in older inpatients but often goes undetected. A short tool, the 4 A's Test (4AT), was created and validated for the detection of delirium. What did this study ask? This study compared the performance of the French version of the 4AT (4AT-F) with the Confusion Assessment Method (CAM) for the screening of delirium. What did this study find? The 4AT-F was a fast and reliable screening tool for delirium in the emergency department (ED). Why does this study matter to clinicians? Because of its quick administration time, it allows for systematic screening of patients at risk of delirium and cognitive impairment.
Belief revision has invariably been studied with abstract relationships using paper-and-pencil tasks. The present study asks whether people employ the same procedures in revising their beliefs when they concern concrete situations rather than arbitrary, abstract ones. Students listened to a narrative and then verified that selected statements from it were true and consistent. They then needed to revise their beliefs as a result of confronting a belief-contravening assumption that they had to accept as true even though it was false of the narrative. There are two main findings. First, when the artificial beliefs were part of an integrated, narrative structure, participants treated them as they do natural semantic categories and not as arbitrary relations. Second, when reasoning about concrete situations in front of them, reasoners readily changed the properties of the objects in order to retain the belief structure of the narrative. This suggests that college students act as if they were Platonists who view the observable world as fallible reflections of the idealized world.
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