Examlex
A data set is called an unbalanced panel if it has missing years for at least some cross-sectional units in the sample.
Amphetamine
A potent central nervous system stimulant that is used in the treatment of attention deficit hyperactivity disorder (ADHD), narcolepsy, and for weight loss, but can also be abused as a recreational drug.
Tranquilizers
Medications used to reduce tension or anxiety, often by depressing the central nervous system.
Placebos
Inactive substances or treatments used as a control in experiments, often to test the effectiveness of medical drugs.
GABA
Gamma-aminobutyric acid, an inhibitory neurotransmitter in the brain that helps reduce neuronal excitability throughout the nervous system.
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