Does a high IQ set you up for career or financial success?

It's not every day that you have to worry about being outwitted by a toddler.

On the other hand, it's not every day that a 2-year-old becomes Mensa's youngest member.

Isla McNabb, a young Kentucky resident with a reportedly 99th percentile IQ,

went viral in May after being accepted into the global society of high-IQ individuals.

Many people are awestruck by her advanced intelligence and predict that the

precocious preschooler will accomplish even more impressive feats in the future.

′′[IQ] is the single most important predictor of work success," Antonakis, a professor of organizational behavior

at the University of Lausanne in Switzerland who specializes in leadership and management research, tells CNBC Make It.

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