Guilford has occupied a well-deserved position among students of psychology and education for many years. His Psychometric Methods (1936) has been followed by the present volume, now in its third edition.

Professor Guilford is a born teacher, and his subject is a difficult one. He has always managed to convey the most difficult of statistical concepts without demanding too much in the way of mathematical training from the student. His textbook provides a balanced account of the various statistical procedures in common use, and the new edition includes Bartlett's test of homogeneity of variance, and some of the non-parametric tests of significance which will certainly be finding a useful application in psychometric work. One may however criticize Guilford on the ground that he tends to be a trifle too conservative and wedded to the older psychometric methods. But this does not detract from the excellence of the volume.