136 Relation ship of Jntelluience to Size and Shape of Head 
Popularity. While the percentage of popular children is almost exactly the 
same for both sexes, and the intelligent children are more popular than the dull 
ones, yet the relationship is more marked in girls than boys: see Fig. 17. 
To sum up, then : While no characters in school children so far dealt with 
show very high correlation with intelligence, we may yet say that the intelligent 
boy is markedly conscientious, is moderately robust, athletic, and popular; he 
tends rather to quick than to sullen temper. He is more self-conscious and 
quieter than the dull boy ; he has a slightly bigger head, and possibly lighter 
pigmentation than those of more mediocre intelligence. His hair has a larger 
percentage of curliness. 
The intelligent girl also is mai'kedly conscientious, moderately robust, athletic, 
and popular. She, too, tends to quick rather than sullen temper. She is less 
self-conscious than the dull girl, and noisier than the girl of mediocre intelligence. 
It is the slow girl who is quiet a.nd shy. The intelligent girl has a slightly bigger 
head than the dull girl, and her hair is more likely to be wavy and much less likely 
to be curly. 
It may possibly be hinted that these results are of little significance, and, had 
they not been so, they could still have been deduced — without elaborate statistics — 
from the impressions of a careful and observant teacher. It may be so, but 
much of science is the verification or refutation of impressions and opinions, and the 
mainly negative conclusions of this paper place at any rate on a sounder quantitative 
basis the view that even for the mass, and therefore much more for the individual, 
little can be judged as to intelligence from the more obvious anthropometric 
measurements and the more easily noted psychical characteristics of children. 
The onus of proof that other measurements and. more subtle psychical observa- 
tions would lead to more definite results may now, I think, be left to those who 
a priori regard such an association as probable. Personally, the result of the 
present enquiry has convinced me that there is little relationship between the 
external physical, and the psychical characters in man. Future j^apers from my 
laboratory, while showing certain definite relationships, will serve to confirm this 
view, as far as the present material is concerned. 
In the tables with which this memoir concludes, we have the full classification 
possible of the raw material. The tables for the three diameters and intelligence 
in the case of girls 'are due to my friend Dr M. Greenwood ; that for cephalic index 
and intelligence in Cambridge graduates is due to Miss A. Barrington. The 
remaining 42 tables are due both in construction and reduction to Dr A. Lee. 
I have not only to thank her for so much aid, but also to acknowledge heartily 
the generosity of the Worshipful Company of Drapers, which has rendered it 
possible for my statistical laborator}^ to retain the services of such an efficient 
computator and assistant. 
