Stage 1: 0 to 10 months. Stage 2: birth to 6 years. Stage 3: 7 to 22 years. Stage 4: 23 to 65 years. Stage 5: older than 65 years.
We’ll go with hmmmmm 23-65 -The brain doesn’t full develop until the age of 25. -brains reach adulthood at age 30. -Concentration abilities peak around age 43. -Peak facial recognition ability occurs around 32. -We're the best at identifying others' emotions at 48.