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Which of the following is a disadvantage of self-administered surveys?
Neurotransmitters
Chemical messengers in the nervous system that transmit signals across synapses from one neuron to another.
Acetylcholine
A neurotransmitter in the nervous system involved in muscle activation and memory formation.
Dopamine
A neurotransmitter involved in many functions, including motivation, reward, and the regulation of mood and movement.
Norepinephrine
A neurotransmitter and hormone involved in the body's fight or flight response, affecting heart rate and blood pressure.
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