Evening star. [volume] (Washington, D.C.) 1854-1972, 1931-02-08

accomplish that which man attains in 20. In
our discussion in the laboratory say the ape
of seven chronological years is 20 human years
of age.
zone chronological year earlier, when the
ape is 6, it has already reached stage that Is
equal to the youngster of II years. A year
earlier still, when the ape is 5, it is actually
on . level with the 6-ysar-old human
IF then Swear ape is equivalent to g.
year-old child it is clear that infancy and
Childhood are not widely different in time re-
lationshtp in the ape from what they are in
man. Both show long delay compared with
the other animals have mentioned.
But since the authropoid leaps from the g.
year human stage to the 12-year human stage
in one time year, and from this to the 2O-year
human stage in second time year, the Spe-
cfnc feature Of mans development Is his ex-
ceeding slcwness in that period known as the
second decade.
What man accomplishes in nine long years
the ape completes in many months"
RUT in this long period of development, as
compared with the apes, however, man
raises himself far beyond the lower animals and
aceumNlates Eve significant attributes which
makes him what he is. These are discipline,
perseverance, responsibility, purpose and viii, ~
all interviewer in complete pattern
IF one Of thsse attributes be lost or delayed"
Or. Todd points out, the anthropOid comes
IuFcI1ing back"
And here we have the great human problem
which DR. Todd and his associates seeking
TO solve-the problem of discovering the lack of,
or even partial failure of any Of these attributes
in the growing child, particularly in the second
decade. Here is the problem of social maIad-
iUstment of a mental condition that retards q
child in the general march of human progress.
Five would properly understand our young
stsrs," says DIR. Todd I'VE must know whether
they are the type who are to have q long period
of adolescence, or who develop quickly to ma
turity. The problem on our hands differs very
much according to the type OF child. By estab-
fishing our timetable, our yardstick, of human
development compared with that in the ape,
we can however predict just what we'll be up
against later ON, and so prepare for its coming.
When we find boy or girl who has travelled
the nine years of adolescence say in IL months,
are face to face with the danger of social
maladjustment, unless we take the child prop
eFly in hand. The child Is really -, but acts
the age of 10. We can't therefore expect this
child TO act his real age, put him in the eighth
grade with normal I3-year-old children, and
expect the same results from this one that we
do from the rest"
TT is the "adolescent lag as DR. Todd terms
it, spreading adOleseent growth over nine
years as against the apes nine months, which
is mans most striking feature and which Is
responsible for the problems which occur dur
ing tine second decade"
The same yardstick that guides the scientist
ia the measurement of the childs growth en-
abIeS him to study individual human variations,
fov Of course no two children are quite alike.
I'VE find" DR.. Todd REMARKS that variation
Is not due 10 chance, bat to definite Causes.
HypOthyrOidism Oack If normal development