They do, but there are also efforts to develop tests that measure other important aspects of cognition, which have an important bearing on things like how well you can function in society and how much of a risk you are to other people (these tests are, more or less, measuring what the rationality community might refer to as rationality). See, for example, What Intelligence Tests Miss: The Psychology of Rational Thought by Keith Stanovich.
They do, but there are also efforts to develop tests that measure other important aspects of cognition, which have an important bearing on things like how well you can function in society and how much of a risk you are to other people (these tests are, more or less, measuring what the rationality community might refer to as rationality). See, for example, What Intelligence Tests Miss: The Psychology of Rational Thought by Keith Stanovich.