Questions and Answers About English Grammar. A strong verb is one in which tense is expressed by an internal vowel change, and a weak verb is one in which tense is expressed by a regular affix ( Linguistics for Everyone: An Introduction, 2013).
Jensen says scientists used to think human brain development was pretty complete by age 10. Or as she puts it, that a teenage brain is just an adult brain with fewer miles on it.. But it's not. To begin with, she says, a crucial part of the brain â the frontal lobes â are not fully connected. Really.
These days, a consensus of neuroscientists agree that brain development likely persists until at least the mid-20s â possibly until the 30s. The fact that our brains arenât developed until the mid 20s means that âlegal adultsâ (those age 18+) are allowed to make adult decisions, without fully mature brains.