212 
our illustration? The message I have at- 
tempted to convey may be stated in the fol- 
lowing propositions: 
1. Technical psychology may be so em- 
ployed as to furnish qualitative and quan- 
titative classified knowledge about a 
singer. 
The question as to the nature of mental 
measurement does not enter into this dis- 
cussion. That question has had its day. 
I am using the term measurement in the 
accepted sense in which we use it every 
day in the psychological laboratory, taking 
for granted that there is general agree- 
ment in regard to its nature and its limita- 
tions. The selection has been made on the 
theory that measurements of the kind we 
commonly accept in psychology may be so 
employed as to furnish a serviceable in- 
voice of the natural capacity, plasticity, 
skill and knowledge a particular individ- 
ual may have for doing a particular thing. 
2. This more or less exact knowledge may 
be so gathered as to serve immediate and 
direct practical purposes. We have in- 
sistent demands for applied psychology 
from the various arts, professions and sci- 
ences. Our illustration shows how one 
such demand may possibly be met. The 
effect of such an illustration should be to 
awaken confidence in our method, to 
awaken a wholesome respect for actual 
facts, and to ward off superficial and hasty 
promises of results. 
3. Applied psychology, if such there is 
to be, must be experimental in method and 
spirit. It is the introduction of the prin- 
ciple of measurement that has given us a 
science of pure psychology; and there will 
be no science of applied psychology until 
the same principle is believed in and acted 
upon seriously by those who would make its 
applications. This does not imply a nar- 
row insistence upon experiments every- 
where, but rather a whole-hearted accept- 
SCIENCE 
[N.S. Vou. XXXV. No. 893 
ance of the spirit of experimental method. 
4. There is need of consulting psycholo- 
gists, trained in pure psychology and in 
the work to which it is to be applied, who 
shall devote themselves professionally to 
applied psychology. The field of the psy- 
chology of music is promising. 
5. This attitude of modern psychology 
toward the human individual and the art 
of music will lead to a keener and more 
penetrating insight into the nature and the 
conditions of both the individual and his 
art, and this will result in helpful guid- 
ance and a more vital appreciation and re- 
spect for the wondrous possibilities of the 
singer and the song. 
6. We must not entertain the idea that 
applied psychology is to live merely upon 
the crumbs that fall from the table of pure 
psychology, nor that it can be reduced to a 
set of ready-made rules which may be 
handed down to the uninitiated. Appled 
psychology ‘‘must recognize itself, its di- 
versities, its stupendous difficulties, its es- 
sential limitations and withal its promise 
and worth.’’® 
Cart E. SEASHORE 
UNIVERSITY OF IOWA 
THE AMERICAN SCHOOL HYGIENE 
ASSOCIATION 
THE next meeting of the American School 
Hygiene Association is scheduled to occur in 
Boston, March 28, 29 and 30, probably at the 
Harvard Medical School. The following is a 
partial program for the meeting: Demonstra- 
tions of ventilating systems, school nursing, 
medical inspection, out-of-door schools and 
school furnishings in certain public and 
private schools of Boston; reports of com- 
mittees on “ Ventilation,” and on “ Standard- 
ization of School Books”; papers by Dr. 
Ernest B. Hoag, lecturer on hygiene, Univer- 
sity of California; Willard S. Small, princi- 
pal, Eastern High School, Washington, D. C.; 
° Seashore, ‘‘The Consulting Psychologist,’’ The 
Popular Science Monthly, March, 1911, p. 290. 
