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Measurement validity is enhanced when questions to be used in a structured quantitative survey are first refined through qualitative cognitive interviewing or focus groups.
Glutamate
A major excitatory neurotransmitter in the brain, involved in memory and learning.
Neurotransmitter
Chemical substances in the nervous system that transmit signals from one neuron to another.
Inhibitory
Pertaining to a neurotransmitter, hormone, or other substance that decreases the likelihood of a neuron firing an action potential.
Excitatory
Referring to substances or processes that increase the likelihood of a neuron firing and transmitting an electrical signal.
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