(
, , . , 6 . 870 , , ( IQ ) , --.
(, " , ?"), IQ. IQ 120-129 (43%), IQ 70–79 .
, , . , .
" , , , IQ, . , , ", - .
The South London and Maudsley NHS Foundation Trust , , , IQ , IQ.
Psychological Medicine.
, . . , , , .