Psychology has offered many theories about intelligence over the years, including ideas about how there are different forms of intelligence. Some people might be very high in all the different forms, some people might be relatively low across the board, and others might have an interesting mix. This lesson focuses on two specific types of intelligence, called 'fluid' and 'crystallized'
Fluid intelligence is defined as the ability to solve new problems, use logic in new situations, and identify patterns
Using a complicated subway system in a new city is a good example of how you might need to use fluid intelligence. The first time you use the subway, you have to figure out the names of the stops you need, which train will take you there, if you need to transfer in the middle, and so on
This type of intelligence is sort of like 'street smarts,' where you need to figure things out that moment and adapt to your situation
In contrast, Cattell also named a second, a different type of intelligence that he called crystallized intelligence
