Kjetil Søren Sundet

• Bourne, Corin; Audemir, Ö; Balanzá-Martínez, V; Bora, A; Brissos, S; Cavanagh, JTO; Clark, L; Cubukcuoglu, Z; Dias, VV; Dittmann, S; Ferrier, IN; Fleck, DE; Frangou, S; Gallagher, P; Jones, L; Kieseppa, T; Martínez-Aran, A; Melle, Ingrid; Moore, PB; Mur, M; Pfennig, A; Raust, A; Senturk, V; Simonsen, Carmen Elizabeth; Smith, DJ; Bio, DS; Soeiro-de-Souza, MG; Stoddard, SDR; Sundet, Kjetil Søren; Szöke, A; Thompson, JM; Torrent, C; Zalla, T; Craddock, N; Andreassen, Ole Andreas; Leboyer, M; Vieta, Erik; Bauer, M; Worhunsky, PD; Tzagarakis, C; Rogers, RD; Geddes, JR & Goodwin, GM (2013). Neuropsychological testing of cognitive impairment in euthymic bipolar disorder: an individual patient data meta-analysis. Acta Psychiatrica Scandinavica.  ISSN 0001-690X. . doi: 10.1111/acps.12133
• Hellvin, Tone; Sundet, Kjetil Søren; Aminoff, Sofie Ragnhild; Andreassen, Ole Andreas & Melle, Ingrid (2013). Social functioning in firste contact mania: clinical and neurocognitive correlates. Comprehensive Psychiatry.  ISSN 0010-440X. . doi: 10.1016/j.comppsych.2012.12.016
• Kessler, Ute; Schoeyen, Helle K.; Andreassen, Ole Andreas; Eide, Geir E.; Hammar, Åsa; Malt, Ulrik Fredrik; Ødegaard, Ketil Joachim; Morken, Gunnar; Sundet, Kjetil Søren & Vaaler, Arne (2013). Neurocognitive profiles in treatment-resistant bipolar I and bipolar II disorder depression. BMC Psychiatry.  ISSN 1471-244X.  13(105) . doi: 10.1186/1471-244X-13-105
• Ramtvedt, Bjørn Erik; Røinås, Elisabeth; Aabech, Henning S. & Sundet, Kjetil Søren (2013). Clinical gains from including both dextroamphetamine and methylphenidate in stimulant trials. Journal of child and adolescent psychopharmacology.  ISSN 1044-5463.  23 . doi: 10.1089/cap.2013.0085
• Ringen, Petter Andreas; Melle, Ingrid; Berg, Akiah Ottesen; Agartz, Ingrid; Spigset, Olav; Simonsen, Carmen Elisabeth; Sundet, Kjetil Søren & Andreassen, Ole Andreas (2013). Cannabis use and premorbid functioning as predictors of poorer neurocognition in schizophrenia spectrum disorder. Schizophrenia Research.  ISSN 0920-9964.  143(1), s 84- 89 . doi: 10.1016/j.schres.2012.10.021
• Schoeyen, Helle K.; Melle, Ingrid; Sundet, Kjetil Søren; Aminoff, Sofie Ragnhild; Hellvin, Tone; Auestad, Bjørn Henrik; Morken, Gunnar & Andreassen, Ole Andreas (2013). Occupational outcome in bipolar disorder is not predicted by premorbid functioning and intelligence. Bipolar Disorders.  ISSN 1398-5647.  15(3), s 294- 305 . doi: 10.1111/bdi.12056
• Aas, Monica; Djurovic, Srdjan; Athanasiu, Lavinia; Steen, Nils Eiel; Agartz, Ingrid; Lorentzen, Steinar; Sundet, Kjetil Søren; Andreassen, Ole Andreas & Melle, Ingrid (2012). Serotonin Transporter Gene Polymorphism, Childhood Trauma, and Cognition in Patients With Psychotic Disorders. Schizophrenia Bulletin.  ISSN 0586-7614.  38(1), s 15- 22 . doi: 10.1093/schbul/sbr113
• Aas, Monica; Steen, Nils Eiel; Agartz, Ingrid; Aminoff, Sofie Ragnhild; Lorentzen, Steinar; Sundet, Kjetil Søren; Andreassen, Ole Andreas & Melle, Ingrid (2012). Is cognitive impairment following early life stress in severe mental disorders based on specific or general cognitive functioning?. Psychiatry Research.  ISSN 0165-1781.  198(3), s 495- 500 . doi: 10.1016/j.psychres.2011.12.045
• Aminoff, Sofie Ragnhild; Jensen, Jimmy Kristian; Lagerberg, Trine Vik; Hellvin, Tone; Sundet, Kjetil Søren; Andreassen, Ole Andreas & Melle, Ingrid (2012). An association between affective lability and executive functioning in bipolar disorder. Psychiatry Research.  ISSN 0165-1781.  198(1), s 58- 61 . doi: 10.1016/j.psychres.2011.12.044
• Andreassen, Ole Andreas & Sundet, Kjetil Søren (2012). Kognitive funksjoner ved bipolare lidelser, I: Brit Haver; Ketil Joachim Ødegaard & Ole Bernt Fasmer (red.),  Bipolare lidelser.  Fagbokforlaget.  ISBN 978-82-450-0585-1.  Kapittel 12.  s 253 - 264
• Evensen, Julie Horgen; Røssberg, Jan Ivar; Barder, Helene; Haahr, Ulrik; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Larsen, Tor Kjetil; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Rund, Bjørn Rishovd; Simonsen, Erik; Sundet, Kjetil Søren; Vaglum, Per Jørgen Wiggen; Friis, Svein & McGlashan, Thomas (2012). Apathy in first episode psychosis patients: A ten year longitudinal follow-up study. Schizophrenia Research.  ISSN 0920-9964.  136(1-3), s 19- 24 . doi: 10.1016/j.schres.2011.12.019
• Halvorsen, Marianne; Høifødt, Ragnhild Sørensen; Myrbakk, Ingvild Nordnes; Wang, Catharina E.; Sundet, Kjetil Søren; Eisemann, Martin & Waterloo, Knut (2012). Cognitive function in unipolar major depression: A comparison of currently depressed, previously depressed, and never depressed individuals. Journal of Clinical and Experimental Neuropsychology.  ISSN 1380-3395.  34(7), s 782- 790 . doi: 10.1080/13803395.2012.683853
• Hegelstad, Wenche; Larsen, Tor Kjetil; Auestad, Bjørn Henrik; Evensen, Julie Horgen; Haahr, Ulrik; Joa, Inge; Johannessen, Jan Olav; Langeveld, Johannes; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Røssberg, Jan Ivar; Rund, Bjørn Rishovd; Simonsen, Erik; Sundet, Kjetil Søren; Vaglum, Per Jørgen Wiggen; Friis, Svein & McGlashan, Thomas (2012). Long-Term Follow-Up of the TIPS Early Detection in Psychosis Study: Effects on 10-Year Outcome. American Journal of Psychiatry.  ISSN 0002-953X.  169(4), s 374- 380 . doi: 10.1176/appi.ajp.2011.11030459
• Hellvin, Tone; Sundet, Kjetil Søren; Simonsen, Carmen Elisabeth; Aminoff, Sofie Ragnhild; Lagerberg, Trine Vik; Andreassen, Ole Andreas & Melle, Ingrid (2012). Neurocognitive functioning in patients recently diagnosed with bipolar disorder. Bipolar Disorders.  ISSN 1398-5647.  14(3), s 227- 238 . doi: 10.1111/j.1399-5618.2012.01004.x
• Holmen, Aina; Juuhl-Langseth, Monica; Thormodsen, Rune; Sundet, Kjetil Søren; Melle, Ingrid & Rund, Bjørn Rishovd (2012). Executive function tests in early-onset psychosis: which one to choose?. Scandinavian Journal of Psychology.  ISSN 0036-5564.  53(3), s 200- 205 . doi: 10.1111/j.1467-9450.2012.00940.x
• Holmen, Aina; Juuhl-Langseth, Monica; Thormodsen, Rune; Ueland, Toril; Agartz, Ingrid; Sundet, Kjetil Søren; Andreassen, Ole Andreas; Rund, Bjørn Rishovd & Melle, Ingrid (2012). Executive function in early- and adult onset schizophrenia. Schizophrenia Research.  ISSN 0920-9964.  142(1-3), s 177- 182 . doi: 10.1016/j.schres.2012.10.006
• Hrubos-Strøm, Harald; Nordhus, Inger Hilde; Einvik, Gunnar; Randby, Anna; Omland, Torbjørn; Sundet, Kjetil Søren; Moum, Torbjørn & Dammen, Toril (2012). Obstructive sleep apnea, verbal memory, and executive function in a community-based high-risk population identified by the Berlin Questionnaire Akershus Sleep Apnea Project. Sleep and Breathing.  ISSN 1520-9512.  16(1), s 223- 231 . doi: 10.1007/s11325-011-0493-1
• Jónsdóttir, Halldóra; Ilner, Stein E. Opjordsmoen; Birkenæs, Astrid Brate; Simonsen, Carmen Elisabeth; Engh, John; Ringen, Petter Andreas; Vaskinn, Anja; Friis, Svein; Sundet, Kjetil Søren & Andreassen, Ole Andreas (2012). Predictors of medication adherence in patients with schizophrenia and bipolar disorder. Acta Psychiatrica Scandinavica.  ISSN 0001-690X.  127(1), s 23- 33 . doi: 10.1111/j.1600-0447.2012.01911.x
• LeBlanc, Marissa; Kulle, Bettina; Sundet, Kjetil Søren; Agartz, Ingrid; Melle, Ingrid; Djurovic, Srdjan; Frigessi, Arnoldo & Andreassen, Ole Andreas (2012). Genome-wide study identifies PTPRO and WDR72 and FOXQ1-SUMO1P1 interaction associated with neurocognitive function. Journal of Psychiatric Research.  ISSN 0022-3956.  46(2), s 271- 278 . doi: 10.1016/j.jpsychires.2011.11.001
• Malt, Ulrik Fredrik; Andersson, Stein & Sundet, Kjetil Søren (2012). Supplerende ikke-biologiske undersøkelsesmetoder, I: Ole Andreas Andreassen (red.),  Lærebok i psykiatri.  Gyldendal Akademisk.  ISBN 978-82-05-39739-2.  Kapittel 8.  s 173 - 193
• Mohn, Christine; Sundet, Kjetil Søren & Rund, Bjørn Rishovd (2012). The Norwegian standardization of the MATRICS (Measurement and Treatment Research to Improve Cognition in Schizophrenia) Consensus Cognitive Battery. Journal of Clinical and Experimental Neuropsychology.  ISSN 1380-3395.  34(6), s 667- 677 . doi: 10.1080/13803395.2012.667792
• Peleikis, Dawn Elisabeth; Varga, Monica; Sundet, Kjetil Søren; Lorentzen, Steinar; Agartz, Ingrid & Andreassen, Ole Andreas (2012). Schizophrenia patients with and without post-traumatic stress disorder (PTSD) have different mood symptom levels but same cognitive functioning. Acta Psychiatrica Scandinavica.  ISSN 0001-690X. . doi: 10.1111/acps.12041
• Sundet, Kjetil Søren & Reinvang, Ivar (2012). Nevropsykologisk undersøkelse ved alvorlige sinnslidelser: metodikk og funn, I: Tormod Fladby; Stein Andersson & Leif Gjerstad (red.),  Nevropsykiatri : metoder og kliniske perspektiver.  Gyldendal Akademisk.  ISBN 9788205412149.  Kap. 11.  s 111 - 115
• Tandberg, Marte; Sundet, Kjetil Søren; Andreassen, Ole Andreas; Melle, Ingrid & Ueland, Toril (2012). Occupational functioning, symptoms and neurocognition in patients with psychotic disorders: investigating subgroups based on social security status. Social Psychiatry and Psychiatric Epidemiology.  ISSN 0933-7954. . doi: 10.1007/s00127-012-0598-2
• Tandberg, Marte; Ueland, Torill; Andreassen, Ole Andreas; Sundet, Kjetil Søren & Melle, Ingrid (2012). Factors associated with occupational and academic status in patients with first-episode psychosis with a particular focus on neurocognition. Social Psychiatry and Psychiatric Epidemiology.  ISSN 0933-7954.  47(11), s 1763- 1773 . doi: 10.1007/s00127-012-0477-x
• Wirgenes, Katrine Verena; Sønderby, Ida Elken; Haukvik, Unn Kristin H.; Mattingsdal, Morten; Tesli, Martin Steen; Athanasiu, Lavinia; Sundet, Kjetil Søren; Røssberg, Jan Ivar; Dale, Anders M.; Brown, Andrew; Agartz, Ingrid; Melle, Ingrid; Djurovic, Srdjan & Andreassen, Ole Andreas (2012). TCF4 sequence variants and mRNA levels are associated with neurodevelopmental characteristics in psychotic disorders. Translational psychiatry.  ISSN 2158-3188.  2(e112) . doi: 10.1038/tp.2012.39
• Bakken, Trygve E.; Bloss, Cinnamon S.; Roddey, Cooper; Joyner, Alexander H.; Rimol, Lars Morten; Djurovic, Srdjan; Melle, Ingrid; Sundet, Kjetil; Agartz, Ingrid; Andreassen, Ole Andreas; Dale, Anders & Schork, Nicholas J. (2011). Association of genetic variants on 15q12 with cortical thickness and cognition in schizophrenia. Archives of General Psychiatry.  ISSN 0003-990X.  68(8), s 781- 790 . doi: 10.1001/archgenpsychiatry.2011.81
• Barrett, Elisabeth Ann; Sundet, Kjetil Søren; Simonsen, Carmen Elisabeth; Agartz, Ingrid; Lorentzen, Steinar; Mehlum, Lars; Mork, Erlend; Andreassen, Ole Andreas & Melle, Ingrid (2011). Neurocognitive functioning and suicidality in schizophrenia spectrum disorders. Comprehensive Psychiatry.  ISSN 0010-440X.  52(2), s 156- 163 . doi: 10.1016/j.comppsych.2010.06.001
• Engh, John; Sundet, Kjetil Søren; Simonsen, Carmen Elisabeth; Vaskinn, Anja; Lagerberg, Trine Vik; Ilner, Stein E. Opjordsmoen; Friis, Svein & Andreassen, Ole Andreas (2011). Verbal learning contributes to cognitive insight in schizophrenia independently of affective and psychotic symptoms. Progress in Neuro-psychopharmacology and Biological Psychiatry.  ISSN 0278-5846.  35(4), s 1059- 1063 . doi: 10.1016/j.pnpbp.2011.02.021
• Evensen, Julie Horgen; Røssberg, Jan Ivar; Haahr, Ulrik; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Langeveld, Hans; Larsen, Tor Ketil; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Rund, Bjørn Rishovd; Simonsen, Erik; Sundet, Kjetil Søren; Vaglum, Per Jørgen Wiggen; Friis, Svein & McGlashan, Thomas (2011). Contrasting monosymptomatic patients with hallucinations and delusions in first-episode psychosis patients: a five-year longitudinal follow-up study. Psychopathology.  ISSN 0254-4962.  44(2), s 90- 97 . doi: 10.1159/000319789
• Halvorsen, Marianne; Waterloo, Knut; Sundet, Kjetil Søren; Eisemann, Martin & Wang, Catharina E. (2011). Verbal learning and memory in depression: A 9-year follow-up study. Psychiatry Research.  ISSN 0165-1781.  188(3), s 350- 354 . doi: 10.1016/j.psychres.2011.02.022
• Hartberg, Cecilie Bhandari; Sundet, Kjetil Søren; Rimol, Lars Morten; Haukvik, Unn Kristin H.; Lange, Elisabeth; Nesvåg, Ragnar; Dale, Anders; Melle, Ingrid; Andreassen, Ole Andreas & Agartz, Ingrid (2011). Brain Cortical Thickness and Surface Area Correlates of Neurocognitive Performance in Patients with Schizophrenia, Bipolar Disorder, and Healthy Adults. Journal of the International Neuropsychological Society.  ISSN 1355-6177.  17(6), s 1080- 1093 . doi: 10.1017/S1355617711001081
• Hartberg, Cecilie Bhandari; Sundet, Kjetil Søren; Rimol, Lars Morten; Haukvik, Unn Kristin H.; Lange, Elisabeth; Nesvåg, Ragnar; Melle, Ingrid; Andreassen, Ole Andreas & Agartz, Ingrid (2011). Subcortical brain volumes relate to neurocognition in schizophrenia and bipolar disorder and healthy controls. Progress in Neuro-psychopharmacology and Biological Psychiatry.  ISSN 0278-5846.  35(4), s 1122- 1130 . doi: 10.1016/j.pnpbp.2011.03.014
• Heiervang, Kristin Sverdvik; Mednick, Sarnoff; Sundet, Kjetil Søren & Rund, Bjørn Rishovd (2011). The psychological well-being of Norwegian adolescents exposed in utero to radiation from the Chernobyl accident. Child and Adolescent Psychiatry and Mental Health.  ISSN 1753-2000.  5(12) . doi: 10.1186/1753-2000-5-12
• Johansen, Ragnhild; Hestad, Knut; Iversen, Valentina Cabral; Agartz, Ingrid; Sundet, Kjetil Søren; Andreassen, Ole Andreas & Melle, Ingrid (2011). Cognitive and Clinical Factors Are Associated With Service Engagement in Early-Phase Schizophrenia Spectrum Disorders. Journal of Nervous and Mental Disease.  ISSN 0022-3018.  199(3), s 176- 182 . doi: 10.1097/NMD.0b013e31820bc2f9
• Lagerberg, Trine Vik; Sundet, Kjetil Søren; Aminoff, Sofie Ragnhild; Berg, Akiah Ottesen; Ringen, Petter Andreas; Andreassen, Ole Andreas & Melle, Ingrid (2011). Excessive cannabis use is associated with earlier age at onset in bipolar disorder. European Archives of Psychiatry and Clinical Neuroscience.  ISSN 0940-1334.  261(6), s 397- 405 . doi: 10.1007/s00406-011-0188-4
• Simonsen, Carmen Elisabeth; Sundet, Kjetil Søren; Vaskinn, Anja; Birkenæs, Astrid Brate; Engh, John; Færden, Ann; Jónsdóttir, Halldóra; Ringen, Petter Andreas; Ilner, Stein E. Opjordsmoen; Melle, Ingrid; Friis, Svein & Andreassen, Ole Andreas (2011). Neurocognitive dysfunction in bipolar and schizophrenia spectrum disorders depends on history of psychosis rather than diagnostic group. Schizophrenia Bulletin.  ISSN 0586-7614.  37(1), s 73- 83 . doi: 10.1093/schbul/sbp034
• Sundet, Kjetil Søren (2011). Nevropsykologisk funksjonssvikt ved schizofreni, I: Bjørn Rishovd Rund (red.),  Schizofreni.  Hertervig Akademisk.  ISBN 9788282170222.  Kapittel 6.  s 102 - 117
• Tandberg, Marte; Ueland, Toril; Sundet, Kjetil Søren; Haahr, Ulrik; Joa, Inge; Johannessen, Jan Olav; Larsen, Tor Ketil; Ilner, Stein E. Opjordsmoen; Rund, Bjørn Rishovd; Røssberg, Jan Ivar; Simonsen, Erik; Vaglum, Per Jørgen Wiggen; Melle, Ingrid; Friis, Svein & McGlashan, Thomas (2011). Neurocognition and occupational functioning in patients with first-episode psychosis: a 2-year follow-up study. Psychiatry Research.  ISSN 0165-1781.  188(3), s 334- 342 . doi: 10.1016/j.psychres.2011.04.021
• Vaskinn, Anja; Sundet, Kjetil Søren; Simonsen, Carmen Elisabeth; Hellvin, Tone; Melle, Ingrid & Andreassen, Ole Andreas (2011). Sex differences in neuropsychological performance and social functioning in schizophrenia and bipolar disorder. Neuropsychology.  ISSN 0894-4105.  25, s 499- 510 . doi: 10.1037/a0022677
• Øie, Merete; Sundet, Kjetil Søren & Ueland, Torill (2011). Neurocognition and Functional Outcome in Early-Onset Schizophrenia and Attention-Deficit/Hyperactivity Disorder: A 13-Year Follow-Up. Neuropsychology.  ISSN 0894-4105.  25(1), s 25- 35 . doi: 10.1037/a0020855
• Mathisen, Lars; Lingaas, Per Snorre; Andersen, Marit Helen; Hol, Per Kristian; Fredriksen, Per Morten; Sundet, Kjetil; Rokne, Berit; Wahl, Astrid Klopstad & Fosse, Erik (2010). Changes in cardiac and cognitive function and self-reported outcomes at one year after coronary artery bypass grafting. Journal of Thoracic and Cardiovascular Surgery.  ISSN 0022-5223.  140(1), s 122- 128 . doi: 10.1016/j.jtcvs.2009.10.034
• Rimol, Lars Morten; Agartz, Ingrid; Djurovic, Srdjan; Brown, Andrew; Roddey, J Cooper; Kähler, Anna Katarina; Mattingsdal, Morten; Athanasiu, Lavinia; Joyner, Alexander H; Schork, Nicholas J; Halgren, Eric; Sundet, Kjetil Søren; Melle, Ingrid; Dale, Anders M & Andreassen, Ole Andreas (2010). Sex-dependent association of common variants of microcephaly genes with brain structure. Proceedings of the National Academy of Science of the United States of America.  ISSN 0027-8424.  107(1), s 384- 388 . doi: 10.1073/pnas.0908454107
• Barrett, Elisabeth Ann; Sundet, Kjetil Søren; Færden, Ann; Agartz, Ingrid; Bratlien, Unni; Romm, Kristin Lie; Mork, Erlend; Røssberg, Jan Ivar; Steen, Nils Eiel; Andreassen, Ole Andreas & Melle, Ingrid (2010). Suicidality in first episode psychosis is associated with insight and negative beliefs about psychosis. Schizophrenia Research.  ISSN 0920-9964.  123(2-3), s 257- 262 . doi: 10.1016/j.schres.2010.07.018
• Barrett, Elizabeth Ann; Sundet, Kjetil Søren; Færden, Ann; Nesvåg, Ragnar; Agartz, Ingrid; Fosse, Roar; Mork, Erlend; Steen, Nils Eiel; Andreassen, Ole Andreas & Melle, Ingrid (2010). Suicidality before and in the early phases of first episode psychosis. Schizophrenia Research.  ISSN 0920-9964.  119(1-3), s 11- 17 . doi: 10.1016/j.schres.2010.03.022
• Egeland, Jens & Sundet, Kjetil Søren (2010). Fra kvalitativ til kvantitativ prosesstilnærming, I: Knut Hestad & Jens Egeland (red.),  Klinisk nevropsykologi. Undersøkelse av voksne pasienter.  Tapir Akademisk Forlag.  ISBN 9788251924672.  2.  s 33 - 50
• Haatveit, Beathe Christin; Sundet, Kjetil Søren; Hugdahl, Kenneth; Ueland, Toril; Melle, Ingrid & Andreassen, Ole Andreas (2010). The validity of d prime as a working memory index: Results from the "Bergen n-back task". Journal of Clinical and Experimental Neuropsychology.  ISSN 1380-3395.  32(8), s 871- 880 . doi: 10.1080/13803391003596421
• Heiervang, Kristin Sverdvik; Mednick, Sarnoff; Sundet, Kjetil Søren & Rund, Bjørn Rishovd (2010). Effect of low dose ionizing radiation exposure in utero on cognitive function in adolescence. Scandinavian Journal of Psychology.  ISSN 0036-5564.  51(3), s 210- 215 . doi: 10.1111/j.1467-9450.2010.00814.x
• Heiervang, Kristin Sverdvik; Mednick, Sarnoff; Sundet, Kjetil Søren & Rund, Bjørn Rishovd (2010). The Chernobyl Accident and Cognitive Functioning: A Study of Norwegian Adolescents Exposed In Utero. Developmental Neuropsychology.  ISSN 8756-5641.  35(6), s 643- 655 . doi: 10.1080/87565641.2010.508550
• Hellvin, Tone; Sundet, Kjetil Søren; Vaskinn, Anja; Simonsen, Carmen Elisabeth; Ueland, Toril; Andreassen, Ole Andreas & Melle, Ingrid (2010). Validation of the Norwegian version of the Social Functioning Scale (SFS) for schizophrenia and bipolar disorder. Scandinavian Journal of Psychology.  ISSN 0036-5564.  51(6), s 525- 533 . doi: 10.1111/j.1467-9450.2010.00839.x
• Lagerberg, Trine Vik; Andreassen, Ole Andreas; Ringen, Petter Andreas; Berg, Akiah Ottesen; Larsson, Sara; Agartz, Ingrid; Sundet, Kjetil Søren & Melle, Ingrid (2010). Excessive substance use in bipolar disorder is associated with impaired functioning rather than clinical characteristics, a descriptive study. BMC Psychiatry.  ISSN 1471-244X.  10(9) . doi: 10.1186/1471-244X-10-9
• Lagerberg, Trine Vik; Larsson, Sara; Sundet, Kjetil Søren; Hansen, Charlotte F; Hellvin, Tone; Andreassen, Ole Andreas & Melle, Ingrid (2010). Treatment Delay and Excessive Substance Use in Bipolar Disorder. Journal of Nervous and Mental Disease.  ISSN 0022-3018.  198(9), s 628- 633 . doi: 10.1097/NMD.0b013e3181ef3ef4
• Ringen, Petter Andreas; Vaskinn, Anja; Sundet, Kjetil Søren; Engh, John; Jónsdóttir, Halldóra; Simonsen, Carmen Elisabeth; Friis, Svein; Ilner, Stein E. Opjordsmoen; Melle, Ingrid & Andreassen, Ole Andreas (2010). Opposite relationships between cannabis use and neurocognitive functioning in bipolar disorder and schizophrenia. Psychological Medicine.  ISSN 0033-2917.  40(8), s 1337- 1347 . doi: 10.1017/S0033291709991620
• Simonsen, Carmen Elisabeth; Sundet, Kjetil Søren; Vaskinn, Anja; Ueland, Toril; Romm, Kristin Lie; Hellvin, Tone; Melle, Ingrid; Friis, Svein & Andreassen, Ole Andreas (2010). Psychosocial function in schizophrenia and bipolar disorder: Relationship to neurocognition and clinical symptoms. Journal of the International Neuropsychological Society.  ISSN 1355-6177.  16(5), s 771- 783 . doi: 10.1017/S1355617710000573
• Van Walsem, Regina Marleen; Sundet, Kjetil Søren; Retterstøl, Lars & Sundset, Øyvind (2010). A double blind evaluation of cognitive decline in a Norwegian cohort of asymptomatic carriers of Huntington's disease. Journal of Clinical and Experimental Neuropsychology.  ISSN 1380-3395.  32(6), s 590- 598 . doi: 10.1080/13803390903337878
• Wirgenes, Katrine; Djurovic, Srdjan; Sundet, Kjetil Søren; Agartz, Ingrid; Mattingsdal, Morten; Athanasiu, Lavinia; Melle, Ingrid & Andreassen, Ole Andreas (2010). Catechol O-methyltransferase variants and cognitive performance in schizophrenia and bipolar disorder versus controls. Schizophrenia Research.  ISSN 0920-9964.  122(1-3), s 31- 37 . doi: 10.1016/j.schres.2010.05.007
• Øie, Merete; Sundet, Kjetil Søren & Rund, Bjørn Rishovd (2010). Neurocognitive Decline in Early-Onset Schizophrenia Compared With ADHD and Normal Controls: Evidence From a 13-Year Follow-up Study. Schizophrenia Bulletin.  ISSN 0586-7614.  36(3), s 557- 565 . doi: 10.1093/schbul/sbn127
• Otnæss, Mona Kolstø; Djurovic, Srdjan; Rimol, Lars Morten; Kulle, Bettina; Kähler, Anna Katarina; Jönsson, Erik G.; Agartz, Ingrid; Sundet, Kjetil Søren; Hall, Håkan; Timm, Sally; Hansen, Thomas; Callicott, Joseph H.; Melle, Ingrid; Werge, Thomas & Andreassen, Ole Andreas (2009). Evidence for a possible association of neurotrophin receptor (NTRK-3) gene polymorphisms with hippocampal function and schizophrenia. Neurobiology of Disease.  ISSN 0969-9961.  34(3), s 518- 524 . doi: 10.1016/j.nbd.2009.03.011
• Vaskinn, Anja; Sundet, Kjetil Søren & Andreassen, Ole Andreas (2009). Svekket sosial problemløsningsevne hos personer med schizofreni. Tidsskrift for Norsk Psykologforening.  ISSN 0332-6470.  46, s 667- 669
• Vaskinn, Anja; Sundet, Kjetil Søren; Friis, Svein; Ueland, Toril; Simonsen, Carmen Elisabeth; Birkenæs, Astrid Brate; Engh, John; Jónsdóttir, Halldóra; Ilner, Stein E. Opjordsmoen; Ringen, Petter Andreas & Andreassen, Ole Andreas (2009). Using the Wisconsin Card Sorting Test to assess learning potential in normal IQ schizophrenia: Does it have potential?. Nordic Journal of Psychiatry.  ISSN 0803-9488.  63(5), s 405- 411 . doi: 10.1080/08039480902879941
• Vaskinn, Anja; Sundet, Kjetil Søren; Hultgren, Christina M.; Friis, Svein & Andreassen, Ole Andreas (2009). Social problem-solving in high-functioning schizophrenia: Specific deficits in sending skills. Psychiatry Research.  ISSN 0165-1781.  165(3), s 215- 223 . doi: 10.1016/j.psychres.2007.11.009
• Jónsdóttir, Halldóra; Engh, John; Friis, Svein; Birkenæs, Astrid Brate; Ringen, Petter Andreas; Vaskinn, Anja; Sundet, Kjetil Søren; Ilner, Opjordsmoen Stein E. & Andreassen, Ole Andreas (2008). Measurement of insight in patients with bipolar disorder. Are self-rated scales developed for patients with schizophrenia applicable?. Journal of Nervous and Mental Disease.  ISSN 0022-3018.  196, s 333- 335 . doi: 10.1097/NMD.0b013e31816a62b2
• Ringen, Petter Andreas; Melle, Ingrid; Birkenæs, Astrid Brate; Engh, John; Færden, Ann; Jónsdóttir, Halldóra; Nesvåg, Ragnar; Vaskinn, Anja; Friis, Svein; Larsen, Frode; Ilner, Opjordsmoen Stein E.; Sundet, Kjetil Søren & Andreassen, Ole Andreas (2008). Illicit drug use in patients with psychotic disorders compared with that in the general population: a cross-sectional study. Acta Psychiatrica Scandinavica.  ISSN 0001-690X.  117(2), s 133- 138 . doi: 10.1111/j.1600-0447.2007.01135.x
• Simonsen, Carmen Elisabeth; Sundet, Kjetil Søren; Vaskinn, Anja; Birkenæs, Astrid Brate; Engh, John; Hansen, Charlotte F; Jonsdottir, Halldora; Ringen, Petter Andreas; Ilner, Opjordsmoen Stein E.; Friis, Svein & Andreassen, Ole Andreas (2008). Neurocognitive profiles in bipolar I and bipolar II disorder: differences in pattern and magnitude of dysfunction. Bipolar Disorders.  ISSN 1398-5647.  10, s 245- 255
• Sundet, Kjetil Søren & Vaskinn, Anja (2008). Beregning av IQ ved hjelp av lesetesten NART: Redusert funksjon fra premorbid nivå ved schizofreni og bipolar lidelse. Tidsskrift for Norsk Psykologforening.  ISSN 0332-6470.  45(9), s 1108- 1115
• Vaskinn, Anja; Sundet, Kjetil Søren; Friis, Svein; Simonsen, Carmen Elisabeth; Birkenæs, Astrid Brate; Jónsdóttir, Halldóra; Ringen, Petter Andreas & Andreassen, Ole Andreas (2008). Emotion perception and learning potential: Mediators between neurocognition and social problem-solving in schizophrenia?. Journal of the International Neuropsychological Society.  ISSN 1355-6177.  14, s 279- 288 . doi: 10.1017/S1355017708080314
• Vaskinn, Anja; Sundet, Kjetil Søren; Friis, Svein; Ueland, Torill; Simonsen, Carmen Elisabeth; Birkenæs, Astrid Brate; Engh, John; Ilner, Opjordsmoen Stein E. & Andreassen, Ole Andreas (2008). Can learning potential in schizophrenia be assessed with the standard CVLT-II? An exploratory study. Scandinavian Journal of Psychology.  ISSN 0036-5564.  49, s 179- 186 . doi: 10.1111/j.1467-9450.2008.00627.x
• Ørbeck, Beate; Reinvang, Ivar; Sundet, Kjetil Søren & Heyerdahl, Sonja (2007). Young adults with severe congenital hypothyroidism: Cognitive event related potentials (ERPs) and the significance of an early start of thyroxine treatment. Scandinavian Journal of Psychology.  ISSN 0036-5564.  48, s 61- 67 . doi: 10.1111/j.1467-9450.2006.00545.x
• Biringer, E; Mykletun, Arnstein; Sundet, K; Kroken, R & Stordal, KI (2007). A longitudinal analysis of neurocognitive function in unipolar depression. Journal of Clinical and Experimental Neuropsychology.  ISSN 1380-3395.  29(8), s 879- 891 . doi: 10.1080/13803390601147686
• Biringer, Eva; Mykletun, Arnstein; Sundet, Kjetil Søren; Kroken, Rune; Stordal, Kirsten I & Lund, Anders (2007). A longitudinal analysis of neurocognitive function in unipolar depression. Journal of Clinical and Experimental Neuropsychology.  ISSN 1380-3395.  29, s 879- 891
• Birkenæs, AB; Ilner, Opjordsmoen Stein E.; Brunborg, C; Engh, JA; Jónsdóttir, Halldóra; Ringen, PA; Simonsen, Carmen Elisabeth; Vaskinn, Anja; Birkeland, KI; Friis, Svein; Sundet, Kjetil Søren & Andreassen, Ole Andreas (2007). The level of cardiovascular risk factors in bipolar disorder equals that of schizophrenia: a comparative study. Journal of Clinical Psychiatry.  ISSN 0160-6689.  68(6), s 917- 923
• Birkenæs, Astrid Brate; Opjordsmoen, Stein; Brunborg, Cathrine; Engh, John; Jonsdottir, Halldora; Ringen, Petter Andreas; Simonsen, Carmen Elisabeth; Vaskinn, Anja; Birkeland, Kåre I.; Friis, Svein; Sundet, Kjetil Søren & Andreassen, Ole Andreas (2007). The level of cardiovascular risk factors in bipolar disorder equals that of schizophrenia: a comparative study. Journal of Clinical Psychiatry.  ISSN 0160-6689.  68, s 917- 923
• Engh, John; Friis, Svein; Birkenæs, Astrid Brate; Jonsdottir, Halldora; Ringen, Petter Andreas; Ruud, Torleif; Sundet, Kjetil Søren; Ilner, Opjordsmoen Stein E. & Andreassen, Ole Andreas (2007). Measuring cognitive insight in schizophrenia and bipolar disorder: a comparative study. BMC Psychiatry.  ISSN 1471-244X. . doi: 10.1186/1471-244X-7-71

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• Aas, Monica; Djurovic, Srdjan; Athanasiu, Lavinia; Tesli, Martin Steen; Hellvin, Tone; Steen, Nils Eiel; Agartz, Ingrid; Lorentzen, Steinar; Sundet, Kjetil Søren; Andreassen, Ole A & Melle, Ingrid (2012). Interaction between (BDNF) VAL66Met, childhood adverse events and impaired cognition in patients with schizophrenia spectrum and bipolar disorder. Early Intervention in Psychiatry.  ISSN 1751-7885.  6, s 45- 45
• Aas, Monica; Djurovic, Srdjan; Athanasiu, Lavinia; Tesli, Martin Steen; Hellvin, Tone; Steen, Nils Eiel; Agartz, Ingrid; Lorentzen, Steinar; Sundet, Kjetil Søren; Andreassen, Ole Andreas & Melle, Ingrid (2012). Interaction Between (bdnf) Va166met, Childhood Adverse Events and Impaired Cognition in Patients with Schizophrenia Spectrum and Bipolar Disorder. Biological Psychiatry.  ISSN 0006-3223.  71(8), s 160S- 160S
• Barder, Helene; Sundet, Kjetil Søren; Rund, Bjørn Rishovd; Haar, Ulrik; Johannessen, Jan Olav; Larsen, Tor Ketil; Melle, Ingrid; Opjordsmoen, Stein; Rossberg, Jan Ivar; Simonsen, Erik; McGlashan, Thomas & Friis, Svein (2012). Neurocognitive development in first-episode psychosis 5-year follow-up: associations between illness severity and cognitive course. Early Intervention in Psychiatry.  ISSN 1751-7885.  6, s 27- 27
• Friis, Svein; Barder, Helene; Evensen, Julie Horgen; Haahr, Ulrik; Hegelstad, Wenche ten Velden; Joa, Inge; Johannessen, Jan Olav; Langeveld, Johannes; Larsen, Tor Ketil; Melle, Ingrid; Opjordsmoen, Stein; Rund, Bjørn Rishovd; Røssberg, Jan Ivar; Simonsen, Erik; Sundet, Kjetil Søren; Vaglum, Per Jørgen Wiggen & McGlashan, Thomas (2012). The TIPS study and bias: Replies to Dr Amos. Australian and New Zealand journal of psychiatry (Print).  ISSN 0004-8674.  46(9), s 905- 907 . doi: 10.1177/0004867412451344
• Kessler, Ute; Schøyen, Helle Kristine; Andreassen, Ole Andreas; Bergsholm, Per; Eide, Geir Egil; Hammar, Åsa; Malt, Ulrik Fredrik; Ødegaard, Ketil Joachim; Morken, Gunnar; Sundet, Kjetil Søren & Vaaler, Arne (2012). The neurocognitive profile in depressed therapy resistant bipolar disorder inpatients. Bipolar Disorders.  ISSN 1398-5647.  14, s 91- 91
• Aas, Monica; Djurovic, Srdjan; Athanasiu, Lavinia; Steen, Nils Eiel; Agartz, Ingrid; Lorentzen, Steinar; Sundet, Kjetil Søren; Andreassen, Ole Andreas & Melle, Ingrid (2011). SEROTONIN TRANSPORTER GENE POLYMORPHISMS, CHILDHOOD TRAUMA AND COGNITION IN PATIENTS WITH PSYCHOTIC DISORDERS. Schizophrenia Bulletin.  ISSN 0586-7614.  37, s 80- 80
• Friis, Svein; Evensen, Julie Horgen; Haahr, Ulrik; Hegelstad, Wenche; Joa, Inge; Johannessen, O; Langeveld, Hans; Larsen, TK; Melle, Ingrid; Opjordsmoen, S; Rossberg, Jan Ivar; Rund, Bjørn Rishovd; Simonsen, E; Sundet, Kjetil Søren; Vaglum, Per Jørgen Wiggen & McGlashan, Thomas (2011). Early Detection and Intervention(EDI) in first episode psychosis: Can it reduce the risk for poor outcome? Tips 10 years findings. Schizophrenia Bulletin.  ISSN 0586-7614.  37, s 98- 98
• Halvorsen, Marianne; Høifødt, Ragnhild Sørensen; Myrbakk, Ingvild Nordnes; Wang, Catharina E.; Sundet, Kjetil Søren; Eisemann, Martin & Waterloo, Knut (2011). Cognitive function in unipolar major depression: A comparison of clinically depressed, previously depressed and never depressed individuals.
• Holmen, Aina; Juuhl-Langseth, Monica; Thormodsen, Rune; Sundet, Kjetil Søren; Melle, Ingrid & Rund, Bjørn Rishovd (2011). WHICH TEST MEASURES BEST EXECUTIVE FUNCTIONS IN EARLY-ONSET SCHIZOPHRENIA?. Schizophrenia Bulletin.  ISSN 0586-7614.  37, s 244- 244
• McGlashan, Thomas H.; Evensen, Julie Horgen; Haahr, J.; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Langeveld, Hans; Larsen, T; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Rossberg, J.; Rund, Bjørn Rishovd; Simonsen, E.; Sundet, Kjetil Søren; Vaglum, Per Jørgen Wiggen & Friis, Svein (2011). EARLY DETECTION AND INTERVENTION (EDI) IN FIRST EPISODE PSYCHOSIS: CAN IT IN CREASE THE CHANCE FOR FULL RECOVERY? TIPS 10 YEAR FINDINGS. Schizophrenia Bulletin.  ISSN 0586-7614.  37, s 273- 274
• Melle, Ingrid; Evensen, Julie Horgen; Haahr, U.; Hegelstad, Wenche; Joa, Inge; Johannessen, Jan Olav; Langeveld, Hans; Larsen, Tor Ketil; Ilner, Stein E. Opjordsmoen; Røssberg, Jan Ivar; Rund, Bjørn Rishovd; Simonsen, E.; Sundet, Kjetil Søren; Vaglum, Per Jørgen Wiggen; Friis, Svein & McGlashan, Thomas (2011). Quality of life and recovery in psychotic disorders - 10 year follow-up of the tips study. Schizophrenia Bulletin.  ISSN 0586-7614.  37, s 274- 274
• Ringen, Petter Andreas; Melle, Ingrid; Berg, Akiah Ottesen; Simonsen, Carmen Elisabeth; Agartz, Ingrid; Sundet, Kjetil Søren & Andreassen, Ole Andreas (2011). THC IN URINE IN SCHIZOPHRENIA: ASSOCIATIONS WITH SYMPTOM LEVELS AND NEUROCOGNITIVE FUNCTIONING. Schizophrenia Bulletin.  ISSN 0586-7614.  37, s 279- 280
• Tandberg, Marte; Ueland, Toril; Sundet, Kjetil Søren; Melle, Ingrid; Røssberg, Jan Ivar; Joa, Inge; Larsen, Tor Ketil; Haahr, Ulrik; Johannessen, Jan Olav; Ilner, Stein E. Opjordsmoen; Rund, Bjørn Rishovd; Simonsen, E.; Vaglum, Per Jørgen Wiggen; Friis, Svein & McGlashan, Thomas H. (2011). NEUROCOGNITION AND OCCUPATIONAL FUNCTIONING IN PATIENTS WITH FIRST EPISODE PSYCHOSIS: A 2-YEAR FOLLOW-UP STUDY. Schizophrenia Bulletin.  ISSN 0586-7614.  37, s 254- 254
• Vaskinn, Anja; Simonsen, Carmen Elisabeth; Hellvin, Tone; Melle, Ingrid; Andreassen, Ole Andreas & Sundet, Kjetil Søren (2011). SEX DIFFERENCES IN NEUROCOGNITIVE PERFORMANCE ACROSS PSYCHOTIC DISORDERS. Schizophrenia Bulletin.  ISSN 0586-7614.  37, s 255- 255
• Andreassen, Ole Andreas; Simonsen, Carmen Elisabeth & Sundet, Kjetil Søren (2010). Neurocognition and psychosocial function in bipolar disorder. European Neuropsychopharmacology.  ISSN 0924-977X.  20, s S197- S197
• Rund, Bjørn Rishovd; Mohn, Christine & Sundet, Kjetil Søren (2010). MATRICS på norsk. Tidsskrift for Norsk Psykologforening.  ISSN 0332-6470.  47, s 160
• Barrett, Elizabeth Ann; Sundet, Kjetil Søren; Simonsen, Carmen Elisabeth; Agartz, Ingrid; Lorentzen, Steinar; Mehlum, Lars; Mork, Erlend; Andreassen, Ole Andreas & Melle, Ingrid (2009). SUICIDE ATTEMPTS AND NEUROCOGNITIVE FUNCTIONING IN SCHIZOPHRENIA SPECTRUM DISORDERS. Schizophrenia Bulletin.  ISSN 0586-7614.  35, s 279- 279
• Lagerberg, Trine Vik; Sundet, Kjetil Søren; Amino, SR; Ringen, Petter Andreas; Andreassen, Ole Andreas & Melle, Ingrid (2009). Different age at onset of bipolar disorder for cannabis and alcohol abusing patients. Bipolar Disorders.  ISSN 1398-5647.  11, s 11- 11
• Simonsen, Carmen Elisabeth; Sundet, Kjetil Søren; Vaskinn, Anja; Birkenaes, A; Engh, JA; Faerden, A; Jónsdóttir, Halldóra; Ringen, Petter Andreas; Opjordsmoen, S; Melle, Ingrid; Friis, Svein & Andreassen, Ole Andreas (2009). NEUROCOGNITIVE DYSFUNCTION IN BIPOLAR AND SCHIZOPHRENIA SPECTRUM DISORDERS: THE ROLE OF HISTORY OF PSYCHOSIS. Schizophrenia Bulletin.  ISSN 0586-7614.  35, s 297- 297
• Sundet, Kjetil Søren; Torgalsbøen, Anne-Kari; Melle, Ingrid; Andreassen, Ole Andreas & Rund, Bjørn Rishovd (2009). Psychometric properties of a Norwegian version of the MATRICS Consensus Cogntitive Battery (MCCB). Schizophrenia Bulletin.  ISSN 0586-7614.  35, s 282- 282
• Willoch, Frode; Lobmaier, Philipp Paul; Kunøe, Nikolaj; Waal, Helge; Andersen, Jannike Mørch; Sundet, Kjetil Søren & Henriksen, Gjermund (2008). ”Kognitiv evne og nevrobiologiske prosesser hos heroinavhengige i behandling”.
• Sundet, Kjetil Søren (2008). Nevropsykologisk svikt ved psykose - diagnostiske konsekvenser? Resultater fra TOP-studien, Universitetet i Oslo. Nevropsykologi.  ISSN 1500-8347.  11(2), s 8- 11
• Sundet, Kjetil Søren (2008). Schizofreni som hjerneorganisk tilstand. Impuls : Tidsskrift for psykologi.  ISSN 0801-2911.  62(2), s 98- 105
• Sundet, Kjetil Søren (2008). Æresmedlem Grete Bryhn. Nevropsykologi.  ISSN 1500-8347.  11(2), s 31- 33
• Sundet, Kjetil Søren; Vaskinn, Anja; Simonsen, Carmen Elisabeth; Hansen, Charlotte F; Birkenæs, Astrid Brate; Engh, John; Jónsdóttir, Halldóra; Ringen, Petter Andreas; Friis, Svein; Opjordsmoen, Stein & Andreassen, Ole Andreas (2008). Timing of neurocognitive decline in schizophrenia and bipolar disorder. Schizophrenia Research.  ISSN 0920-9964.  98, s 36- 36
• van Walsem, M; Retterstol, L; Sundet, Kjetil Søren & Sundseth, O (2008). Cognitive function in presymptomatic Huntington's disease: A double-blind comparison between carriers and non-carriers in Norwegian individuals. Journal of Neurology, Neurosurgery and Psychiatry.  ISSN 0022-3050.  79, s A9- A9
• Willoch, Frode; Lobmaier, Phillip; Kunøe, Nikolai; Waal, Helge; Andersen, Jannike Mørch; Sundet, K & Henriksen, Gjermund (2008). Kognitiv evne og nevrobiologiske prosesser hos heroinavhengige i behandling.

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