1st level of this model displays the instant assessment of DS and environment at the end of the
development event;
• 2nd level shows acquired during development event competencies that can be measured using a variety of
questions and tests;
• 3rd level refers to the application of acquired competencies through work, which is reflected in the
employee's behaviour;
• 4th level shows impact of the development process on a company's business performance;
• 5th level let to assess the return on investment (Gredzens, 2007);