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In the process of person perception, we initially form a very rapid first impression based largely on looking at other people's faces. According to the textbook, if you glanced at a stranger's face for only one tenth of a second:
Insulin
A hormone produced by the pancreas that regulates blood sugar levels.
Serotonin
A neurotransmitter in the brain associated with regulating mood, anxiety, and happiness.
Epinephrine
A hormone and neurotransmitter also known as adrenaline, involved in the body's fight-or-flight response, increasing heart rate, and dilating airways.
Systolic Blood Pressure
The pressure in the arteries when the heart beats and fills them with blood.
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