Although a verbal intelligence test is directly a measure of what people know, it is indirectly a way of identifying people who can code and manipulate verbal stimuli rapidly in situations in which knowledge per se is not a major factor. (Author/BJG)

The major thesis of this research is that there are two types of processes underlying verbal performance. First, there are processes based on knowledge. Second, verbal performance requires the exercise of certain information-free, mechanistic processes, i.e., those that are conducted on the physical representation of a symbol (including whatever…