Planning to buy a new TV set as a Christmas family gift? Your decision would probably be based on a series of technical characteristics, such as size or screen resolution. Yet at some point you might ask yourself: can I really afford this?

You would probably answer this question by taking into account not only the price of the TV, but also how much money you have and, more generally, how wealthy you are. But do you actually have the correct perception of your wealth?

Read more at The Conversation.