Another reason to give money to your mom: Women tend to be better investors than men

A landmark 2001 study showed that women outclassed men as investors by nearly 1% a year. Now we are coming closer to understanding why: Testosterone interferes with the male investor’s brain.

A new study from Caltech, Wharton, Western University and ZRT Laboratory found that men are quicker to make judgments and less likely to examine facts that might prove them wrong.

Researchers gave two groups of men either a testosterone gel or a placebo. Then they asked questions designed to test their ability to reflect on facts.

For instance, if a ball and a bat cost $1.10 and the bat costs $1 more than the ball, how much does the ball cost?

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