The Structure and Measurement of Intelligence

It is generally and rightly considered a virtue in a teacher to observe accurately the differences in ability among his pupils, and to discover the direction in which the nature of each particularly inclines him. There is an incredible amount of variability in talent, and the forms of minds are no less varied than the forms of bodies Quintilian (70 A. D. ) There are many good books on Intelligence, such as Cattell's (1971) monumen­ tal and original contribution, or Matarazzo's (1972) careful and