Money psychology expert: Why the smartest people make bad decisions—compared to those with average IQ

1. Intelligence increases the ability to fool yourself with elaborate stories about why something happened.

Those with high IQ scores aren’t always fast learners, because they often try to cram the real world into the theories they’ve been taught, while average folks are better at accepting the real world at face value.

2. Intelligence pushes you toward the idea that complex problems require complex solutions.

Some of the most complex problems require the simplest solutions, because simple solutions are the ones that navigate around — rather than trying to steer through — parts of a problem that are fundamentally unknowable.