Would an Observational Study or an Experiment Be More Appropriate

question 56

Essay

Would an observational study or an experiment be more appropriate to investigate the effects on humans of a substance known to be toxic? Explain.

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Definitions:

Alzheimer's Disease

A progressive neurological disorder that leads to memory loss, impaired thinking skills, and changes in behavior, ultimately affecting the ability to perform everyday tasks.

Gene

A unit of heredity made up of DNA that occupies a specific location on a chromosome and determines a particular characteristic in an organism.

Cognitive Deficits

Impairments in cognitive functions such as memory, attention, and problem-solving abilities.

Stroke Patients

Individuals who have experienced a stroke, a medical condition where poor blood flow to the brain results in cell death, leading to impairments in movement, speech, and cognitive abilities.