**Author details**

Jan Folkmann Wright Department of Behavior Sciences, Oslo Metropolitan University, Norway

\*Address all correspondence to: jan.wright@oslomet.no

© 2018 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
