A job half done: The road to intelligence testing in the year 2000

After a brief historical review of the development of the intelligence test and the study of individual differences, it is suggested that the major impediment to an understanding of human intelligence is the fragmented way it is studied. This fragmented approach is in contradiction to the very factors which make the intelligence test successful. An orientation is suggested which integrates the various aspects of the study of human intelligence. If this approach, or one like it, is adopted and applied until the year 2000 it is suggested that intelligence tests will have a very different appearance than they do today. They will be an integral, but indescriminable, part of a systematic theory of the acquisition of knowledge.