Psychology is the study of a. the human mind.
A psychologist wants to know why adolescents experiment with drugs. She administers a lengthy survey to 200 high school seniors in order to research this issue. The brain must send a signal to the spinal cord before the reflexive action can be initiated. The brain must send a signal directly to the relevant muscle fibers before the reflexive action can be initiated. The brain is informed of the reflex only after the reflexive action has been executed.