342 
IOWA ACADEMY OP SCIENCE 
These percentages may then he expressed in a single curve 
as here shown, which may he called a psychogram. Anyone ac- 
quainted with the meaning of these measurements can then 
tell at a single glance the specific character of individual tal- 
ents in quantitative terms. The same principle may be applied 
to any kind of talent, regardless of how diversified the units of 
measurements may he. 
Psychological Laboratory, 
State University of Iowa. 
