Why Tablet, Smart Phone Owners Buy More of Everything

It isn't hard to find a survey "finding" that tablet owners or smart phone owners buy more of some product than non-tablet owners, or non-smart phone users. The reason is not complicated, and probably has nothing to do with tablet or smart phone owners being more "social," more engaged, more aware or more "something else" than the typical person.

Tablet owners and smart phone owners simply have more money to spend, on average, than people who don't own tablets or smart phones. In other words, they are richer. 

To be sure, one might argue that tablet or smart phone owners also have different behavioral patterns and what not. But they spend more because they have more money to spend.