side more than their own party. Clustering illusion Gilovich was an early author in the clustering illusion, which is closely related to the "hot hand" fallacy, and is the tendency to see "clusters" of data in a random sequence of data as nonrandom. In How We Know What Isn't So, Gilovich explains how people want to see a sequence such as as planned, even though it was arbitrary. In addition, he stated that people tend to misjudge randomness, thinking that rolling the same number on dice 4 times in a row is not truly random, when in fact it is. Illusion of transparency Building on his research on the spotlight effect, Gilovich helped to discover the illusion of transparency, or the tendency to overestimate the extent to which people telegraph their inner thoughts and emotions. In a study he conducted with two coauthors in 1998, individuals read questions from index cards and answered them out loud. They either lied or told the truth based on what the card said to do on a label only they could see. Half of the liars thought they had been caught, but in fact only a quarter were, hence the illusion of transparency. In addition, they found in the same study that in an emergency situation, people assumed the emergency and concern would show in their expression and behavior, but it didn't, which the authors believe partially explains the bystander effect: "When confronted with a potential emergency, people typically play it cool, adopt a look of nonchalance, and monitor the reactions of others to determine if a crisis is really at hand. No one wants to overreact, after all, if it might not be a true emergency. However, because each individual holds back, looks nonchalant, and monitors the reactions of others, sometimes everyone concludes (perhaps erroneously) that the situation is not an emergency and hence does not require intervention." Regret Gilovich has researched the causes of regret. A study he conducted in 1994 found that specific actions people wish they hadn't taken are regretted more in the short run, but ultimately, inactions are regretted more in the long run. He has continued to emphasize that people tend to regret the things they don't do more than the things they did. Anchoring Following Amos Tversky and Daniel Kahneman, Gilovich and his colleagues have conducted research in anchoring, the tendency to anchor on information that comes