In a study of both children and adults, people were more likely to try a food they already ‘dislike’ when they were shown an image of a pleasant face alongside that food – and this was particularly true of the youngest children in the study, aged five years old.
It’s worth remembering that, when offered ‘liked’ foods alongside a disgusted face, all the participants showed less desire to eat the food, including the adults – although the biggest impact was again seen in the children aged five.[1]
Eating together can be a great way to encourage your child to try a variety of foods. Not by telling them to take a mouthful or have one more bite, but by them seeing people eating and enjoying a variety of food.
The tricky bit can be if there is a food you really don’t like yourself – when you’re eating together as family, try to stay neutral about foods you’re not so keen on, if you can!
Reference:
[1] Barthomeuf, L., Droit-Volet, S., & Rousset, S. (2012). ‘How emotions expressed by adults' faces affect the desire to eat liked and disliked foods in children compared to adults’. British Journal of Developmental Psychology, 30(2), 253-266.