The proportion of infants arriving at school not knowing whether they are right or left-handed has trebled in the past decade, researchers say. The situation has been made worse by excessive parental fears, driven by cot death, about letting them lie or crawl on their front.
Children of four and five are struggling to make advances in writing because of their stunted dexterity, made worse by shortening attention spans.
The trend has raised concerns that children are developing more slowly than in past years, leading to “indelible” behavioural problems in adolescence.