With what age group did researchers specifically work to conclude that mindfulness intervention increase concentration, social emotional competence, and optimism?

it's a nutrition food for pregnant mothers so they unborn child can get its nutrition that it needs to grow in to a healthy baby.

explanation:

and the mother is getting all of her nutrition and her calcium and vitamins .

i have no clue xdxdxdxdxdxd

i-i-i-i-i-i don't k-k-k-k-know.