A six-factor model of cognition in schizophrenia and related psychotic disorders: relationships with clinical symptoms and functional capacity.
Gladsjo JA, McAdams LA, Palmer BW, Moore DJ, Jeste DV, Heaton RK. A six-factor model of cognition in schizophrenia and related psychotic disorders: relationships with clinical symptoms and functional capacity. Schizophr Bull. 2004; 30(4):739-54.