13.26 Quick thinking, smooth talking, and a correlation: Australian psychologist William von Hippel and his colleagues examined the premise that the ability to think quickly would be related to social skills in a paper titled “Quick Thinkers Are Smooth Talkers” (von Hippel et al., 2016). They summarized their findings by saying: “Participants who were able to answer common-knowledge questions more rapidly and to respond more rapidly in general were evaluated by their peers as being more charismatic than participants who responded more slowly. These findings are consistent with the notion that mental speed facilitates social functioning” (p. 121). Are the researchers describing a positive correlation or a negative correlation? Explain your answer.