Intelligence (IQ) - attribute in Wasteland, Wasteland 2 and Fountain of Dreams.
How well a character thinks and solves problems. This is probably the most important attribute because it determines which and how many skills a character may master. Certain skills can only be mastered by characters
with an IQ of a certain level or above. Characters start with skill points equal to their IQ. During the course of the game, you'll definitely want to raise your IQ.
”— Wasteland manual
 Wasteland 2