Adderall and Ritalin, two popular "study drugs," that are used to treat attention deficit/hyperactivity disorder (ADHD) are both mixtures of

According to Sternberg, in romantic love relationships, which component is missing?

A) Intimacy B) Infatuation C) Commitment D) Passion

__________ increased after women had an intimate conversation with someone, compared with a neutral conversation

a. Testosterone b. Epinephrine c. Progesterone d. Melatonin