IQ goes from being weakly correlated with genetics for children, to being strongly correlated with genetics for late teens and adults. The heritability of IQ increases with age and reaches an asymptote at 18–20 years of age and continues at that level well into adulthood.

commit (something) to memory To make an effort to learn something; to memorize something. Everyone in our English class had to commit a poem to memory and then recite it before the class.

1. Brain exercises.
2. Have fun with a jigsaw puzzle.
3. Try your hand at cards.
4. Build your vocabulary.
5. Dance your heart out.
6. Use all your senses.
7. Learn a new skill.
8. Teach a new skill to someone else.

9 Ways You Can Train Your Brain to be Smarter

1. You are the company you keep. Innovation.
2. Get enough shut-eye. Any lack of rest, relaxation and/or excessive stress can seriously reduce the efficiency of your brain function.
3. Read, read, read!
4. Food glorious food!
5. Play games!
6. Keep a diary or journal.
7. Exercise your body as well as mind.
8. Write with your hand.

Not generally. IQ tests are age adjusted, basically to take account of youth and inexperience (under 18) or age and diminishing speed.

For the highest IQ participants, the drop in performance with age was precipitous– from about 75% correct to about 65% to close to 50% (floor), for college age, 60-74 year old, and 75-90 year old participants, respectively. For the lowest IQ participants, performance was near floor for all three age groups.

That’s right, your brain processing power and memory peaks at the age of 18, according to new research published in Sage Journals.

Many aspects of fluid intelligence peak in adolescence and begin to decline progressively beginning around age 30 or 40.

Scientists have long known that our ability to think quickly and recall information, also known as fluid intelligence, peaks around age 20 and then begins a slow decline.

Woodcock–Johnson Test of Cognitive Abilities