• Is cannabis a gateway to hard drugs? 

      Melberg, Hans Olav; Jones, Andrew Michael; Bretteville-Jensen, Anne Line (Peer reviewed; Journal article, 2010-06)
      Trappetrinnshypotesen hevder at bruk av cannabis øker risikoen for også å starte med tyngre rusmidler. Vi har testet denne kontroversielle, men innflytelsesrike, hypotesen på et utvalg cannabisbrukere i Norge. For å undersøke ...
    • A simple wavelet-based test for serial correlation in panel data models 

      Li, Yushu; Andersson, Fredrik (Journal article; Peer reviewed, 2021)
      Hong and Kao (2004) proposed a class of general applicable wavelet-based tests for serial correlation of unknown form in the residuals from a panel regression model. The tests can be applied to both static and dynamic panel ...