Tactile interaction
When a salesperson touches a customer very subtly and lightly, the chance of participation by this customer, the tip he gives, or in some circumstances his/her evaluation of the service increases. Still, some care is warranted. Salespeople should evaluate whether and when it is appropriate to touch someone during their sales talk. Women tend to have a higher preference for tactile contact and age also seems to play a role as customers over 65 appear to find tactile contact more convincing.
Spence & Gallace, 2010; Citrin, Stem, Spangenberg, & Clark, 2003; Crusco & Wetzel, 1984; Williams & Bargh, 2008; Krishna, 2012