Individual Differences

Human beings differ in physique, mental ability, personality, educational achievements, and in all other characteristics. Not only is one man unlike another, but every man is essentially different from every other, so that no training, no forming, nor informing, will ever make two persons alike in thought or in power. In the field of education the differences are eliminated somewhat by having every one of the same chronological age begin school at the same time. But a cross-sectional study of...