It is often important and useful for people to predict their own behavior in novel situations. Although theory suggests that such predictions should be based at least in part on consensus information, some past research in this area suggests that people ignore it. Previous investigators have argued that, instead of using consensus information, people predict their own behavior on the basis of their personal histories. Two studies reported in this article demonstrate that people are willing to make use of consensus information in predicting their own behavior. However, self-monitoring is found to regulate consensus information use. High self-monitors are more responsive to complimentary consensus information than are low self-monitors, and low self-monitors are more responsive to threatening consensus information than are high self-monitors. The use of base-rate information in statistical reasoning processes has been of interest to psychologists for many years, due in part to Kahneman and Tversky's (1972, 1973, 1984) interest in people's appreciation of statistical rules and laws and to Kelley's (1967) interest in processes by which people make attributions regarding the causes of behavior. Early research on the use of base-rate information suggested that people either ignore it or vastly underuse it. However, more recent research has shown that people often use base-rate information to make judgments but that its influence is greater under some circumstances than under others (for reviews, see Borgida & Brekke, 1981; Kassin, 1979). People are more responsive to base-rate information derived from a representative sample than they are to information based on an unrepresentative sample (Wells & Harvey, 1977). Base-rate information has more effect when it is encountered after other sorts of competing information than when it is encountered before such information (Ruble & Feldman, 1976; Zuckerman, 1978). People make more use of base-rate information when they bring a scientific judgmental orientation to a problem than when they bring a clinical orientation (Zukier & Pepitone, 1984). Finally, people are more responsive to baserate information if inferential rules suggesting the use of base rates have been activated (Ginossar & Trope, 1987). Thus, it