In a study involving 516 dairy farmers in the UK, researchers found that treating the animals as individuals also increased production.
The average amount of milk produced by a cow over its annual 10 month lactation period is 13,198 pints (7,500 litres). Those cows with names had an average higher milk yield of 454 pints (258 litres)*.
The same is applicable to humans.
‘Hello’ vs. ‘Hello <name>’ has different impact.
What inference can you draw from this? How are you going to use this data when it comes to marketing or selling or simply communicating (to human beings)?