People differ in intelligence, and they also differ psychologically in many other important ways. Psychologists use the term “personality” to describe all relatively stable individual differences in behavior, motivation, emotion, and cognition (McAdams & Pals, 2006). This chapter explores how intelligence is related to the rest of personality. Does knowing that someone is high or low in intelligence tell us anything else about that person? Can we make educated guesses about people’s personalities if we know their IQs? The short answer to this question is yes. We know a lot about how intelligence is associated with personality. It turns out that there are only a few other traits with which intelligence is strongly or even moderately associated, but there are a number of others with which it is at least weakly associated. Thus, although knowing someone’s IQ certainly does not allow us to be very confident about most other aspects of his or her personality, it does give us some clues about what might be likely.