„The first 2 years of school may provide a unique window of opportunity to boost the WM skills (Anm.: Working Memory skills) of children from low-income families.“
Dr. Jenna E. Finch, Do Schools Promote Executive Functions? Differential Working Memory Growth Across School-Year and Summer Months. In: AERA Open, April-June 2019, Vol. 5, No. 2, S. 11.