Parents who joke and pretend with their children are teaching them important life skills, new research has shown.
The study by the University of Sheffield researchers showed that children as young as 16 months old naturally learn the difference between joking and pretending by picking up on their parents' cues.
It also showed understanding the difference between the two allows children the opportunity to learn, imagine, bond, and think in abstract ways.
Researchers carried out two studies; one involved parents being asked to joke and pretend with their 16 to 20 month old children using actions.
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In the second study, parents of 20 to 24 month olds were asked to joke and pretend verbally with their toddlers.
Pretend play included parents telling their children a round block was a horse and jokes included mismatching items like saying that a toy chicken was a hat.
The research, published in the journal Cognitive Science, found parents can offer explicit cues to help distinguish between joke and pretend intention contexts and children, even as young as 16 months old, pick up on those cues.
In response their children showed less belief through their actions and the older children showed less belief through their language.
"The study shows just how important play is to children's development. Parents who pretend and joke with their children offer cues to distinguish the difference between the two and toddlers take advantage of these cues to perform," said Dr Elena Hoicka, from the Department of Psychology.
"For example, if a parent said something like, 'That's not really a hat!' children would realise it was a joke, and not real, and would avoid putting the toy chicken on their head.
"The research reveals the process in which toddlers learn to distinguish joking and pretending," she said.
"Knowing how to joke is good for maintaining relationships, thinking outside the box, and enjoying life. Pretending helps children to practice new skills and learn new information.
"So while parents may feel a bit daft putting a toy chicken on their head they can at least console themselves with the knowledge that they are helping their children develop important skills for life," Hoicka added.