Methodology and procedures of the study

As Sidney Moon, the author of the above passage, would agree, there are few phenomena rarer in education and psychology than exceptionally and profoundly gifted children. This is doubtless why previous research on extreme intellectual precocity in children has comprised, in the main, isolated case studies of individual students (Goldberg, 1934; McElwee, 1934; Witty and Coomer, 1955).