Parents — this piece is not going to tell you anything new. In fact, it is nothing more than a repetition of the obvious.
The thing that contributes most to your child's development is the feeling that they are loved and valued by their parents.
Not the prestigious school. Not the enrichment classes. Not the artisanal nutrition, not even the proper support for their attention issues. In terms of relative share, the effect of parental love — or its absence — beats every other factor walking.