Answer:
He's likely to be between 20-40 years old.
Step-by-step explanation:
First, there are two different types of intelligence:
- Fluid intelligence
- Crystalized intelligence
Fluid intelligence refers to the ability to reason, analyzing and solving problems. This intelligence doesn't rely on pre-existing knowledge. This intelligence tends to peak early in life and then starts declining.
There are some different points of view on when exactly this decline happens, psychologists used to believe that the peak of this intelligence was reached when the person was in his 20's but some later research has suggested that some elements of this intelligence peak as late as age 40.
Crystalized intelligence refers to the knowledge that is acquired by experience and education. This intelligence grows as we grow older.
Dr. Rich has published 10 articles and 3 books in a very short amount of time. This means that he has a very good ability to analyze new information which has helped him made new discoveries. Therefore, we can say that he is using his fluid intelligence to get all this accomplishments so it seems that his fluid intelligence hasn't reached its declined point.
So, we can say that he's most likely to be between his twenties and 40 years old.