Here’s the best part, however. The distribution of introverts and extroverts in the population looks eerily like the results Grant found plotting revenue across

Here’s the best part, however. The distribution of introverts and extroverts in the population looks eerily like the results Grant found plotting revenue across his 1-to-7 scale. Some of us are heavy introverts. Some of us are stalwart extroverts. But the vast majority of us are ambiverts. Surely these results could be explained by saying that we are better at selling to people who are like us then? Assuming there are few extroverts or introverts but lots of ambiverts in a population of sales people and the same distribution is found in the people being sold to. If we are better at selling to people similar to ourselves then the ambiverts chosen for the experiment will perform well in a wider segment of the population and hence make more sales.