Wechsler Adult Intelligence Scale (WAIS)
Wechsler Adult Intelligence Scale (WAIS) is an intelligence test that is used quite commonly, and it measures the verbal and nonverbal abilities of adults. The test has been revised in recent years and is now called the WAIS-R. When using this test, the person scoring it or evaluating it would look to see if there are differences between the verbal and nonverbal sections.
A big difference could mean that there is some kind of problem (such as a learning problem). There is also a similar test for children that also has two sections, but the items are designed to be age specific (at least in the sense of being designed for children as opposed to adults).
See also: Wechsler Intelligence Scale For Children (WISC)