Brain activity?….ok…..article is clearly propaganda for some type of agenda.
do y’all even comprehend what your reading and posting?
You don't need a study to recognise that providing a poor family with more removes certain stresses and uncertainty.
Remove those stresses, they are more likely to have patience and engage with their children which will stimulate brain activity.
Sounds less like propaganda and you wanting to stick to a system that cripples children who have the misfortune of being born into poor families.