He has been interviewed as an expert in the art of influence and persuasion by a number of publications including the Wall Street Journal .
Palumbo has written nine books on sales psychology , consumer behavior , and the science influence and persuasion .
Palumbo has been interviewed as an expert in the art of influence and persuasion by a number of publications including the Wall Street Journal .
Palumbo has written nine books on sales psychology , consumer behavior , and the science influence and persuasion .