![]() ![]() The instrument and its many derivatives have become widely used and are known universally as the Seguin Form Board (DuBois, 1970). Seguin’s performance-based nonverbal measure of cognition required the puzzle-like placement of common geometric shapes into openings of the same shape. Seguin (1856) is possibly best known for his development of unique instrumentation to aid in the assessment of children’s abilities through nonverbal means. ![]() In addition to Itard’s pioneering work, even earlier historical figures pursued the problem of assessing the intellectual abilities of children who could not or would not speak more directly. ![]() In the widely celebrated case of Victor, the Wild Boy of Aveyron, Jean Itard sought to determine the cognitive abilities of a feral youth and help the boy acquire functional language skills (Carrey, 1995 Itard, 1932). This effort, designed to determine latent cognitive functioning in the absence of manifest language abilities, initiated the field of nonverbal intellectual assessment. In tandem with Binet and Simon’s work, European clinicians also attempted to develop methods for assessing the cognitive functioning of children who could not or would not speak.
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