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.
The brain is fully developed around the age of 20-25 like the above say. But making rational decisions has nothing to do with that, you can make those at any age. At about age 23 the final stages of brain development occur. The last part of development to occur is the part of the brain that is involved in rational decision making.