Collegiate Education for Nursing

compared to man. Only two chapters deal exclusively with chimpanzee behavior. Also, the test procedures employed were part of the Gesell and Thompson behavioral examination; a test devised for the study of the human infant. The most significant findings of this comparative study are that, in general, body postures appear on the average one-third earlier in the chimpanzee, and that chimpanzee postural development is little influenced by environmental variations. Chapter six, which comprises over half the book, is too technical to be of interest to the general reader. However, the study as a whole is a much needed contribution to comparative psychology and should be of great value to those interested in behavioral ontogeny. Students of human child development should also find this study of great interest, for the value of many items of the Gesell examination as indices of development are questioned.