no 



SEX AND HEREDITY 



TABLE 4. Assertiveness. Correlation = -5. 



Brothers f Both shy, - 



alike ^Both self-assertive, 



Brothers unlike one shy, the other 

 self-assertive, 



Totals, 



Numbers to be 

 Numbers actually ex P ected if there 



found. 

 679 



399 

 494 



were no 



resemblance 



between brothers. 





545 

 265 



762 



1572 



TABLED. Popularity. Correlation = -5. 



Brothers ( Both popular, 

 alike- [Both unpopular, 



Brothers unlike one popular, the 

 other unpopular, 



Totals. 



Numbers actually 

 found. 



Numbers to be 

 expected if there 



were no 



resemblance 



between brothers. 



IIO 



37 



1028 



68 



528 



1624 



1624 



Table 6 gives some examples of the results of Pearson's 

 investigations, and we note the close similarity between 

 the intensity of resemblance (i.e. of inheritance) for 

 physical and mental characteristics, as calculated from 

 these school data. The objection might otherwise have 

 been raised that the figures for the mental characters 

 were of less value than those for the physical, owing to the 

 greater liability of the former to be influenced by (i) 

 errors of judgment, or of bias, on the part of the teachers 

 who filled up the schedules, and (2) the similarity of 



