RT Journal
A1 DeLisi LE
T1 A new classification for the psychoses?
JF Archives of General Psychiatry
JO Archives of General Psychiatry
YR 1999
FD July 1
VO 56
IS 7
SP 672
OP 672
DO 
UL http://dx.doi.org/
AB 
Because schizophrenia has a strong genetic vulnerability, one way to validate a classification system would be to examine its pattern of inheritance. Significantly, less variance within families for these new categories compared with the interfamilial variance would confirm that these new categories are valid. However, despite the fact that these investigators are known to have families with multiple ill members, they fail to report this important relationship.