%0 Journal Article
%T The meaning of group differences in cognitive test performance
%J Archive of "World Psychiatry".
%D 2019
%R 10.1002/wps.20645
%X What does it mean that groups of individuals given a diagnosis of schizophrenia get fewer items correct and respond more slowly than comparison groups on tests of memory, attention, executive functioning, and social cognition? Green et al's answer1 is unequivocal: the weaker performance is caused by a ¡°cognitive impairment¡±£¿, which is a ¡°primary deficit¡±£¿, arising from a specific neuropathological cause. This ¡°im©\pairment¡± is viewed as both a vulnerability factor and a ¡°core feature¡± of schizophrenia. This is a position currently held by a majority of the field and supported by a large evidence base
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6502459/