figure 8.17 Brain connections In this brain image, the green dots indicate areas of the brain and the bars, which vary in color, indicate links among them. The color of the bar represents the percentage of people (in research by Li et al., 2009) who had a direct connection between any two areas. Some connections (red) were possessed by 100% of participants, whereas others (yellow) were present in about half the participants. People with more interconnections overall were found to have higher IQs. (LH and RH indicate right and left hemisphere as you look down on the brain from above.)