Is your child a picky eater? Brock researchers could use your help

It’s a common scene at the dinner table: parents begging and pleading children to “please just eat the broccoli,” or anything else on the plate that isn’t a hot dog or mac and cheese.

What do parents do? While it’s crucial for children to get their nutrition from the food they eat, if they refuse to eat that food, the options seem limited.

Brock University master’s student Laura Tardi and her supervisor, Associate Professor of Applied Disability Studies Kimberley Zonneveld, are aiming to change that.

They’re comparing the effectiveness of two versions of a non-intrusive mealtime strategy designed to get children and youth who are picky eaters to expand their food range.

The team is seeking research participants to help.

“We’re currently looking for picky eaters between the ages of two and 17 years old who do eat a wide variety of foods, but their parents are hoping to get them to eat a couple of more foods,” says Tardi.

Typically, these ‘more foods’ tend to be fruits and vegetables, she says.

Research on picky eaters to date has tended to focus on one of several strategies to get kids to eat a wider range of foods. Tardi and Zonneveld are comparing versions of a particular procedure to see if one works best.

The procedure is called the High Probability Instructional Sequence. It consists of presenting someone with several instructions they are likely to comply with followed by an instruction they are less likely to comply with.

“Prior research has found different versions of this procedure to effectively increase the range of food children will eat,” says Zonneveld. “However, what remains unknown is which version of this procedure works best — and quickest. That’s what we’re trying to figure out.”

In one condition, children will be presented with three bites their favourite foods followed by one bite of the target food (something they don’t typically eat, such as broccoli).

In the other condition, children will be presented with an empty spoon three times followed by a spoonful of the target food. In both cases, the children will receive verbal praise after completing each step.

Parents will fill out surveys beforehand to identify their children’s favourite and least favourite foods and the foods that parents want their children to eat.

“If they’re eating three bites of a preferred food, are they more likely to eat the target food?” says Tardi. “Does that contrast significantly with three bites of an empty spoon followed by the target food?”

“If both methods are found to be equally effective, it may be best to present a few bites of an empty spoon rather than a few bites of the child’s favourite food to get the ball rolling before presenting the target food because children’s favourite foods, like candy and chips, tend to be less healthy,” says Zonneveld.

Determining the best way to get kids to eat foods that they normally would refuse could be a breakthrough for parents, serving as an effective, non-intrusive treatment for picky eaters, says Tardi.

The stakes in doing so are very high.

“There are a lot of problems associated with picky eating,” says Tardi. “Vitamin and other nutritional deficiencies could result in stunted growth, among other problems.”

Zonneveld also notes that “it can be quite stressful for parents of picky eaters, so finding an easy and effective solution to help the whole family at mealtime is the ultimate goal of this study.”

According to the Canadian Paediatric Society, parents identify 25 to 35 per cent of toddlers and preschoolers as being picky eaters. That number doubles in children with autism. A 2019 study found that picky eating and other unusual eating behaviours were present in 70 per cent of children with autism.

Zonneveld says that the vast majority of picky eating research has focused on children experiencing developmental disabilities.

“We are expanding this scope of this research to include children with and without a developmental disability to extend the literature and to provide solutions for all families,” says Zonneveld.

To enroll in the study, parents should contact Tardi at or Zonneveld at

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