Is there data which actually illustrates and supports what drives sales performance, hiring great salespeople, and developing salespeople?  Is it meaningful?  If the data is compelling, would you modify your views, beliefs, practices and behaviors? 

I've written a number of articles based on my research, our data from assessing more than 500,000 salespeople, statistics and/or pure science.  Some of the articles pertain to sales performance, while others are based on the hundreds of thousands of salespeople whom we have assessed.

This article series is called Sales - What the Data Tells Us.  While some of the articles simply report the research and/or data, others share either my insights about the data or provide data to support my insights.  Here are the articles: