„The first five years of every child‘s life are a period of great opportunity, but also one of risk. The cognitive and social-emotional skills that children develop in these early years have long-lasting impacts on their later outcomes throughout schooling and adulthood. […] The window for positive early learning closes when children are around seven years old, due to a sharp decrease in brain malleability at this point.“
Rowena Phair, MA, International Early Learning and Child Well-being Study. Assessment
Framework (2021), S. 9.