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1 Liddle PF, "The symptoms of chronic schizophrenia. A reexamination of the positive-negative dichotomy" 151 : 145-151, 1987
2 Kay SR, "The positive and negative syndrome scale (PANSS) for schizophrenia" 13 : 261-276, 1987
3 Juckel G, "The new approach: psychosocial functioning as a necessary outcome criterion for therapeutic success in schizophrenia" 21 : 630-639, 2008
4 van der Gaag M, "The five-factor model of the Positive and Negative Syndrome Scale II: a ten-fold crossvalidation of a revised model" 85 : 280-287, 2006
5 van der Gaag M, "The five-factor model of the Positive and Negative Syndrome Scale I: confirmatory factor analysis fails to confirm 25 published five-factor solutions" 85 : 273-279, 2006
6 Drake RJ, "The evolution of symptoms in the early course of nonaffective psychosis" 63 : 171-179, 2003
7 Addington J, "Social functioning in individuals at clinical high risk for psychosis" 99 : 119-124, 2008
8 Dickerson F, "Social functioning and neurocognitive deficits in outpatients with schizophrenia: a 2-year follow-up" 37 : 13-20, 1999
9 Addington J, "Social cognition mediates illness-related and cognitive influences on social function in patients with schizophrenia- spectrum disorders" 35 : 49-54, 2010
10 Addington J, "Social and cognitive functioning in psychosis" 99 : 176-181, 2008
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