Which term refers to chemicals in the brain that regulate psychological functioning?

Which term refers to chemicals in the brain that regulate psychological functioning?

• A. Neurochemistry
• B. Phenotype
• C. Ego
• D. Superego

Answer: (A)

Neurochemistry is the study of the brain’s chemicals that regulate psychological functioning. These chemicals, such as neurotransmitters like dopamine and serotonin, act as messengers that influence mood, arousal, attention, and many other mental processes. That’s why this term best fits the description of chemicals in the brain that regulate psychological functioning. By contrast, phenotype refers to observable traits like height or eye color that result from genes and environment, not brain chemistry. The ego and superego are parts of Freud’s psychoanalytic theory about personality structure, not about brain chemicals.

Neurochemistry is the study of the brain’s chemicals that regulate psychological functioning. These chemicals, such as neurotransmitters like dopamine and serotonin, act as messengers that influence mood, arousal, attention, and many other mental processes. That’s why this term best fits the description of chemicals in the brain that regulate psychological functioning.

By contrast, phenotype refers to observable traits like height or eye color that result from genes and environment, not brain chemistry. The ego and superego are parts of Freud’s psychoanalytic theory about personality structure, not about brain chemicals.