Bandiera, Oriana, Andrea Prat, Raffaella Sadun, and Julie Wulf. "Span of Control and Span of Attention." Harvard Business School Working Paper, No. 12-053, December 2011. (Revised April 2014.) ...

When studying life span, scientists tend to work with organisms that do not live very long; that way, they can observe the entire course of an organism's existence and obtain relatively rapid ...