15 JANUARY 1954, Page 28

IN THIS, the latest of the series of studies of

the mentality of children which have estab- lished its author as the foremost authority on the subject, he elaborates his own theory of the beginnings of intelligent behaviour and compares it with alternative contemporary theories. It is closely argued in a severe style Which has not been softened in translation : b, In the text is relieved by numerous vivid Illustrations drawn from the observations of Children, including the author's own infants: every hypothesis is thus subjected to the test 01 experience. It is a solid work, which will appeal to professionals in this field rather than to the general reader.

G. M. C.