No evidence for familial covariation of neurocognition and negative symptoms in psychotic disorders Lataster T, Shazad A, Henquet C, Quee P, Schizophr. Res. 2012 Aug;139(1-3):271-2 PMID: 22475383 Abstract Lataster T, Shazad A, Henquet C, Quee P, No evidence for familial covariation of neurocognition and negative symptoms in psychotic disorders04.03.2012