According to Amy Morin, a Florida-based psychotherapist and author of the book '13 Things Mentally Strong People Don't Do', there's a certain type of person who is easily enticed by the Christmas spirit prematurely.

She writes that Christmas festivities often stir up nostalgia and so sentimental types may be more inclined to get the tree up a lot earlier than us normal folk.

“It makes sense people often want to decorate early because the sooner they get out those decorations, the sooner they can experience a little bit of that magic again. The earlier they decorate, the longer the season lasts and they have more time to reflect on happy memories and positive things about the world,” Morin says.

“The holiday season provides 'a much-needed escape from the stress of day-to-day life', not to mention the short days and increasingly chilly weather,” Morin continues.

Clinical psychologist at Pepperdine University, Professor Erlanger A. Turner, says that decorating early can be explained by the 'anticipation of joy' theory.

Speaking to MailOnline, he explained that by decorating early, “people can prolong the sense of excitement and happiness associated with the holiday season.”

“'As people begin to mentally prepare for enjoyable experiences, such as Christmas decorations and celebrations, anticipation of joy helps to boost their mood and well-being,” Professor Turner added.

“In our current global climate where there is increased exposure to violence, oppression, and uncertainty, many may see putting up decorations early as the one thing that they have control over.”