Nobody can resist the smile or laughter of babies, but have you ever wondered what makes them smile when they couldn’t understand any of your languages?

Out of curiosity, Casper Addyman, of Birkbeck, University of London decided to find out the scientific reason behind it, which can help our understanding of conditions such as autism and Down syndrome.

The born of the “Babylab”

This is the world's largest and most comprehensive survey of what makes babies laugh, was launched for almost a decade. More than 1000 parents from around the world are thrilled to join the survey by completing the given survey form of what, when, where, and why babies laugh. Video and audio files are very much encouraged too. “The Laughing Baby”, an all about discovering babies smile book was also released in 2020.

When do babies smile?

Caspar’s study shows that a baby's first smile comes at around six weeks, welcomes their first social smiles starting shortly afterward, between two and four months, and laughter follows on soon, at three to six months. Please take note that some babies took three times as long to laugh, so don't worry if your baby hasn’t yet.

Laughter is the positive noise they can give when they learned something new or achieve something difficult; Smiles are often given to parents or caretakers once their demands have been fulfilled and a cue to encourage parents to do so; While Crying is usually getting adult’s attention when they need help.

There’s some interesting result about the survey, shows that daddy and mummy are both equally funny to babies. Also, reports that boy babies laugh an average of 50 times per day, slightly more than girl babies who laugh around 37 times.

Caspar finds that what adults do to make them laugh doesn’t matter at all; what’s more important is that your baby has your undivided full attention. In the other saying, it’s not peek-a-boo that makes them laugh; it’s YOUR peek-a-boo that makes them laugh.

What triggers their smile or laughter?

If you may have noticed, baby loved being touched, tickled etc. Everybody knows that Peek-a-boo is the ultimate entertainment boding with babies and young children. This is because babies often think that disappeared daddy and mummy who makes sudden reappearance come as quite a surprise. Although this startled them at first, somehow babies start to anticipate the “return” from beloved daddy and mummy as they haven’t developed the sense of time passing.

Any new undiscovered field always triggers their laughter, and it could be as simple as turning on and off the light that makes it goes dark and bright. Just like 18-month old babies can’t recognize their reflection from the mirror, but 4 months old babies found high interest in reacting to the mirror because they realized that their reflection is imitating each of their actions.

Last but not least, smiling at them, playing, cuddling, and to them is always a good way to bond with them. You can’t spoil a newborn, in fact, research shows that babies who get parental care and affection early on help their early brain and social development.