When done with intent, mirroring can be a useful leadership technique in sales, negotiations, job interviews, collaboration and team building.

FORBES: The Other Side of the Mirror

Berrett-Koehler said "Leapfrogging" sold about 11, 000 print copies between August and December 2012, including several thousand outside the U.S. Mr. Kaplan says sales were also boosted by references in various articles and media interviews.

WSJ: Authors Buy Their Way Onto Best-Seller Lists