BACKGROUND: Researching psychotic disorders in unison rather than as separate diagnostic groups is widely advocated, but the viability of such an approach requires careful consideration from a neurocognitive perspective. AIMS: To describe cognition in people with bipolar disorder and schizophrenia and to examine how known causes of variability in individual's performance contribute to any observed diagnostic differences. METHOD: Neurocognitive functioning in people with bipolar disorder (n = 32), schizophrenia (n = 46) and healthy controls (n = 67) was compared using analysis of covariance on data from the Northern Ireland First Episode Psychosis Study. RESULTS: The bipolar disorder and schizophrenia groups were most impaired on tests of memory, executive functioning and language. The bipolar group performed significantly better on tests of response inhibition, verbal fluency and callosal functioning. Between-group differences could be explained by the greater proclivity of individuals with schizophrenia to experience global cognitive impairment and negative symptoms. CONCLUSIONS: Particular impairments are common to people with psychosis and may prove useful as endophenotypic markers. Considering the degree of individuals' global cognitive impairment is critical when attempting to understand patterns of selective impairment both within and between these diagnostic groups.
BACKGROUND: Researching psychotic disorders in unison rather than as separate diagnostic groups is widely advocated, but the viability of such an approach requires careful consideration from a neurocognitive perspective. AIMS: To describe cognition in people with bipolar disorder and schizophrenia and to examine how known causes of variability in individual's performance contribute to any observed diagnostic differences. METHOD: Neurocognitive functioning in people with bipolar disorder (n = 32), schizophrenia (n = 46) and healthy controls (n = 67) was compared using analysis of covariance on data from the Northern Ireland First Episode Psychosis Study. RESULTS: The bipolar disorder and schizophrenia groups were most impaired on tests of memory, executive functioning and language. The bipolar group performed significantly better on tests of response inhibition, verbal fluency and callosal functioning. Between-group differences could be explained by the greater proclivity of individuals with schizophrenia to experience global cognitive impairment and negative symptoms. CONCLUSIONS: Particular impairments are common to people with psychosis and may prove useful as endophenotypic markers. Considering the degree of individuals' global cognitive impairment is critical when attempting to understand patterns of selective impairment both within and between these diagnostic groups.
Authors: Margo W Menkes; Kristan Armstrong; Jennifer Urbano Blackford; Stephan Heckers; Neil D Woodward Journal: Schizophr Res Date: 2018-10-26 Impact factor: 4.939
Authors: Rothanthi Daglas; Kelly Allott; Murat Yücel; Lisa P Henry; Craig A Macneil; Melissa K Hasty; Michael Berk; Sue M Cotton Journal: Int J Bipolar Disord Date: 2017-12-18
Authors: Moogeh Baharnoori; Cali Bartholomeusz; Aurelie A Boucher; Lisa Buchy; Christopher Chaddock; Bonga Chiliza; Melanie Föcking; Alex Fornito; Juan A Gallego; Hiroaki Hori; Gisele Huf; Gul A Jabbar; Shi Hyun Kang; Yousri El Kissi; Jessica Merchán-Naranjo; Gemma Modinos; Nashaat A M Abdel-Fadeel; Anna-Karin Neubeck; Hsiao Piau Ng; Gabriela Novak; Olasunmbo O Owolabi; Diana P Prata; Naren P Rao; Igor Riecansky; Darryl C Smith; Renan P Souza; Renate Thienel; Hanan D Trotman; Hiroyuki Uchida; Kristen A Woodberry; Anne O'Shea; Lynn E DeLisi Journal: Schizophr Res Date: 2010-10-08 Impact factor: 4.939
Authors: Katie M Lavigne; Lucile A Rapin; Paul D Metzak; Jennifer C Whitman; Kwanghee Jung; Marion Dohen; Hélène Lœvenbruck; Todd S Woodward Journal: Schizophr Bull Date: 2014-02-19 Impact factor: 9.306