You can boost your quiz performance by unleashing the crowd within, a new study shows. The next time you’re asked to estimate a historical date, for example, try doing the following: make your first estimate; then pause and assume your first guess was off the mark. Consider why, then use this new perspective to make a second estimate. Average your two estimates and, chances are, this newly calculated date will be more accurate than your original answer. The new approach is called “dialectical boot-strapping” and according to Stefan Herzog and Ralph Hertwig, it really works.
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