The first goal of this article is to discuss the role of nonverbal ability tests in the identification of academically gifted children. I note that most nonverbal tests measure verbally mediated cognitive processes, that they are neither "culture flee" nor "culture fair," and that we have known these facts for a very long time. I show that…

The historical development and recent applications are described of the picture sequencing format (PSF), a testing device which requires the subject to designate a complete and correct order for a set of related pictures. The earliest use was by Decroly in 1914 and perhaps the best known use is in the Wechsler intelligence tests. Special…

Random polygons were used as stimuli in a two-choice multiple discrimination learning paradigm designed to test individual learning ability. A nonverbal test was developed in order to avoid the cultural and racial bias which, according to the author, is inherent in verbal tests. Information processing rate (IPR) was used as the measure of learning…