Browsing Faculty of Psychology by Author "Brevik, Erlend Joramo"

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    • Adult Attention Deficit Hyperactivity Disorder. Beyond the Core Symptoms of the Diagnostic and Statistical Manual of Mental Disorders 

      Brevik, Erlend Joramo (Doctoral thesis, 2018-02-06)
      Background/Introduction: Attention Deficit Hyperactivity Disorder (ADHD) is a prevalent condition in both children (estimated prevalence of about 5%) and adults (estimated prevalence of about 3%). ADHD is characterized by ...

    • Fluid Intelligence in a Norwegian Sample of Middle-Aged and Older Adults 

      Brevik, Erlend Joramo (Master thesis, 2012-11-25)
      Based on results from earlier studies, fluid intelligence (Gf) is expected to decline with age and symptoms of depression, while crystallized intelligence (Gc) is expected to remain stable. Gf is expected to show a relation ...

    • Genome-wide analyses of aggressiveness in attention-deficit hyperactivity disorder 

      Brevik, Erlend Joramo; van Donkelaar, Marjolein M J; Weber, Heike; Sanchez-Mora, Cristina; Jacob, Christian; Rivero, Olga; Kittel-Schneider, Sarah; Garcia-Martinez, Iris; Aebi, Marcel; van Hulzen, Kimm; Cormand, Bru; Ramos-Quiroga, Josep A; Lesch, Klaus-Peter; Reif, Andreas; Ribases, Marta; Franke, Barbara; Posserud, Maj-Britt Rocio; Johansson, Stefan; Lundervold, Astri; Haavik, Jan; Zayats, Tetyana (Peer reviewed; Journal article, 2016-03-29)
      Aggressiveness is a behavioral trait that has the potential to be harmful to individuals and society. With an estimated heritability of about 40%, genetics is important in its development. We performed an exploratory ...