To seal more car deals, Chevrolet UK looked to arm its salesmen with the perfect weapon of confidence: an unstoppable handshake. Here's the secret they received from Geoffrey Beattie, Head of Psychological Sciences at the University of Manchester:
PH (Perfect Handshake)= √ (e^2 + ve^2)(d^2) + (cg + dr)^2 + π{(4<s>^2)(4<p>^2)}^2 + (vi + t + te)^2 + {(4<c>^2 )(4<du>^2)}^2
We hope (and suspect) the training posters and equation, supposedly meant for Chevrolet-sellers, are meant for publicity and are not a real attempt to improve customer relations. The variables, as outlined in a Chevrolet press release:
(e) is eye contact (1=none; 5=direct) 5; (ve) is verbal greeting (1=totally inappropriate; 5=totally appropriate) 5; (d) is Duchenne smile - smiling in eyes and mouth, plus symmetry on both sides of face, and slower offset (1=totally non-Duchenne smile (false smile); 5=totally Duchenne) 5; (cg) completeness of grip (1=very incomplete; 5=full) 5; (dr) is ...
