Two experiments investigating the capacity to sustain mental set in @entity303 were conducted. Experiment 1 analyzed performance of a non-demented control group (NC), @entity1 with @entity195 ( @entity195 ) and @entity1 with @entity1294 ( @entity1294 ) on the Boston Revision of the Wechsler Memory Scale Mental Control subtest (MC). On simple tasks there were no between-group differences after controlling for time to completion. On complex tasks, NC @entity1 outperformed both @entity303 groups and @entity195 @entity1 obtained higher accuracy indices than @entity1294 @entity1 . The @entity1294 group produced a disproportionate number of commission errors regardless of task complexity. The @entity195 group tended to produce more omission errors on more difficult measures of mental set. Individual task performance was divided into three sections-first, middle, and last. @entity1294 @entity1 made fewer and fewer correct responses over all three sections, whereas performance of @entity195 @entity1 leveled off by the middle section with no further decline. Experiment 2 compared letter fluency performance among NC, @entity195 and @entity1294 groups, and @entity1 with @entity303 secondary to @entity191 ( @entity191 ). For all letter cues, @entity1294 and @entity191 @entity1 generated fewer responses than NC and @entity195 @entity1 . However, @entity1294 and @entity191 @entity1 generated a larger proportion of words than @entity195 and NC @entity1 within the first 15 s. As the task progressed, the output of @entity1294 and @entity191 @entity1 dropped precipitously. These findings indicate that failure to maintain mental set is not a diffuse or general @entity73 . Rather, failure to maintain mental set in @entity303 may be best understood within the context of predictable and specific within-task time epochs.

Capacity to maintain mental set in XXXX .

@entity1 :: ('9606', 'Species') :: ['participants'] @entity303 :: ('MESH:D003704', 'Disease') :: ['dementia'] @entity1294 :: ('MESH:D015140', 'Disease') :: ['IVD', 'ischemic vascular dementia'] @entity73 :: ('MESH:D003072', 'Disease') :: ['cognitive disability'] @entity191 :: ('MESH:D010300', 'Disease') :: ["idiopathic Parkinson's disease", 'PD'] @entity195 :: ('MESH:D000544', 'Disease') :: ['AD', "Alzheimer's disease"]
@entity303 :: (MESH:D003704,Disease) :: ['dementia']
