Clean-plate rule
The “clean your plate” rule teaches children to ignore their feeling of fullness – it's better to serve small portions and let them have seconds.
Ausführlich erklärt
Healthy children can feel when they're full – the rule “you have to clean your plate” teaches them to ignore that feeling. It dates back to times when food was scarce. Today it can do harm: anyone who has learned to keep eating past the point of fullness until the plate is empty is more likely to keep eating even when a restaurant portion is far bigger than necessary.
The research on this is revealing. Toddlers still finely adjust how much they eat: in a well-known US experiment (Rolls, Engell and Birch, 2000), three-year-olds ate the same amount regardless of portion size – five-year-olds already ate significantly more when given a large portion. So between the ages of three and five, children start to rely more on external cues: plate size, rules, praise. These are exactly the years when it's worth protecting their gut feeling.
The alternative is simple: serve small portions – seconds are always allowed. That way, the amount stays in the child's hands, and less ends up in the bin. Serving bowls on the table that everyone helps themselves from support this. Anyone who's full after a child-sized portion can stop – even if there's still something left on the plate.
Helpful phrases: “Listen to your tummy – is it full yet or still hungry?” instead of “Just three more spoonfuls.” And don't link dessert to a clean plate: otherwise the main course becomes an obstacle and dessert the goal.
What if a child eats almost nothing and is hungry two hours later? Fixed mealtimes and a healthy snack in between (fruit, bread, vegetables) instead of sweets solve this – without a power struggle. Children who eat little at one meal usually make up for it at the next; over several days, the amount evens out.