If You Wanted to Test If Antibacterial Soap Worked Better

question 4

Multiple Choice

If you wanted to test if antibacterial soap worked better than regular soap, which experiment below has the strongest experimental design?

• A)Have people wash with antibacterial soap first and later with regular soap.
• B)Have two groups of people wash with either antibacterial or regular soap.
• C)Have two groups of people wash with either antibacterial or regular soap, without knowing which type of soap they are using.
• D)Have two groups of people wash with either antibacterial or regular soap, with neither the researchers nor the groups knowing which type of soap they are using.

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Definitions:

Motor Cortex

A region of the cerebral cortex involved in planning, controlling, and executing voluntary movements.

Amygdala

A part of the brain located within the temporal lobes, involved in emotion processing, decision-making, and memory.

Somatosensory Cortex

is a part of the brain responsible for processing sensory information from the body, including touch, temperature, and pain.

Motor Cortex

An area within the cerebral cortex dedicated to planning, controlling, and carrying out voluntary movements.