By creating categories and placing stimuli in those categories, we can process information more efficiently

When Marco arrived, he was smiling but with no drooping of eyelids or crinkling in the corners of his eyes. He is probably showing a(n)

A) emotional expression. B) fake emotion. C) display rule. D) Duchenne smile.

John Bowlby's interest in attachment began in the context of ____

a. the Korean War b. World War I c. World War II d. the Vietnam War