OBJECTIVE: The goal of the current study was to compare premorbid behavioral and cognitive functioning between co-twins discordant for psychotic disorder and between these pairs of twins and pairs of twins with no psychotic disorders. METHOD: The authors linked data from the Israeli Draft Board Registry, which contains cognitive and behavioral assessments of all 16-17-year-old male Israeli twins, with data from the National Psychiatric Hospitalization Case Registry. Pairs of male twins who were healthy at the time of testing but discordant for psychoses later on were compared with one another and with pairs of healthy male twins. RESULTS: The affected twins performed significantly worse than healthy twins on measures of individual autonomy, social functioning, and physical activity and nonsignificantly worse on measures of abstract reasoning. There were no significant differences in cognitive or behavioral scores between the co-twins who did or did not develop psychotic disorders. CONCLUSIONS: The authors conclude that these findings underscore the familial nature of behavioral and cognitive deficits antecedent to psychoses.
OBJECTIVE: The goal of the current study was to compare premorbid behavioral and cognitive functioning between co-twins discordant for psychotic disorder and between these pairs of twins and pairs of twins with no psychotic disorders. METHOD: The authors linked data from the Israeli Draft Board Registry, which contains cognitive and behavioral assessments of all 16-17-year-old male Israeli twins, with data from the National Psychiatric Hospitalization Case Registry. Pairs of male twins who were healthy at the time of testing but discordant for psychoses later on were compared with one another and with pairs of healthy male twins. RESULTS: The affected twins performed significantly worse than healthy twins on measures of individual autonomy, social functioning, and physical activity and nonsignificantly worse on measures of abstract reasoning. There were no significant differences in cognitive or behavioral scores between the co-twins who did or did not develop psychotic disorders. CONCLUSIONS: The authors conclude that these findings underscore the familial nature of behavioral and cognitive deficits antecedent to psychoses.
Authors: Frederike Schirmbeck; Alexander Georgi; Jana Strohmaier; Christine Schmael; Katja V Boesshenz; Thomas W Mühleisen; Stefan Herms; Per Hoffmann; Rami Abou Jamra; Johannes Schumacher; Wolfgang Maier; Peter Propping; Markus M Nöthen; Sven Cichon; Marcella Rietschel; Thomas G Schulze Journal: J Autism Dev Disord Date: 2008-05-13
Authors: Erin Stolz; Krishna M Pancholi; Dhruman D Goradia; Sarah Paul; Matcheri S Keshavan; Vishwajit L Nimgaonkar; Konasale M Prasad Journal: Neuroimage Date: 2012-08-21 Impact factor: 6.556
Authors: Caroline Ranem Mohn-Haugen; Christine Mohn; Frank Larøi; Charlotte M Teigset; Merete Glenne Øie; Bjørn Rishovd Rund Journal: Schizophr Res Cogn Date: 2022-03-01
Authors: D Malaspina; C Corcoran; K R Kleinhaus; M C Perrin; S Fennig; D Nahon; Y Friedlander; S Harlap Journal: BMC Psychiatry Date: 2008-08-21 Impact factor: 3.630