In Addition to Profound Cognitive Decline, the Distinguishing Features of Neurocognitive

question 179

Multiple Choice

In addition to profound cognitive decline, the distinguishing features of neurocognitive disorder due to Lewy body disease, is ________________marked by frequent periods of drowsiness and staring to space, as well as recurrent visual hallucinations and rigid body movements and stiff muscles typical of Parkinson's disease.

• A) the appearance of fluctuating alertness and attention,
• B) increased episodes of hunger
• C) episodes of extreme depression
• D) episodes of aggression

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Definitions:

Observational Study

A study wherein researchers observe and record data without manipulating any variables, in contrast to an experimental study.

Matched Pairs

A study design in which subjects are paired based on specific characteristics, with one in each pair receiving treatment and the other not.

Blocking

A technique in experimental design used to reduce the effects of nuisance variables by grouping subjects into blocks based on these variables.

Experimental Unit

The smallest division of the experimental material such that any two units may receive different treatments during the experiment.