MEMO FROM TO; ™
J. LEDERBERG Arthur Jensen RC
GENETICS DEPARTMENT RO

STANFORD UNIVERSITY
STANFORD, CALIFORNIA

OCT 92 1960

 

The reference I mentioned to you ia:

"Brain response correletes of psycho-
metric intelligence’. Ertl and Sdwfer

seture 223:421-2 7/26/69.
xX
One wishes for a more detailed presenta-

tion of the dota, e.g., even the sex classi-
fication is missing.

There were elso somerreports in Science lest
year on EXG/sleep peculisrities in Downs!
infants (these also have deficientes in
serotonin metabolism).

The Ertl-Schafer findings still misht re-

flect learned behavior, but these are per-
haps the best leads we have to date.