They identified (habits of mind) that these individuals balance:
Integrating big-picture ideas with practical, disciplined execution.
Combining deep customer empathy with the vision to create something new. The Self-made Billionaire Effect: How Extreme P...
As both authors were senior leaders at PwC, the firm published a professional briefing titled 10Minutes on The Self-Made Billionaire Effect which outlines the "Producer vs. Performer" framework.
If you are looking for a paper or summary to understand the core research, you can access the following resources: They identified (habits of mind) that these individuals
The full title of the book is by John Sviokla and Mitch Cohen.
Building partnerships between "Producers" and "Performers" to scale an idea. Performer" framework
A concise overview of the five critical "habits of mind" found in self-made billionaires is available in the Self-Made Billionaire Effect 1-page summary.