An international expert firm in Learning & Development.

Since 2001, learning that demonstrably delivers.

From 2001 to now.

  1. 2003
    Colleagues sharing knowledge, standing by the window

    Human Performance Improvement

    Through ASTD the focus shifts from the course to the whole work environment.

  2. 2008
    Cover of Kostbaar misverstand

    Tulser is born

    With Kostbaar Misverstand it becomes a consultancy, Tulser, an anagram of Result.

  3. 2010
    Cover of 702010, towards 100% performance

    With Charles Jennings

    International collaboration with the founder of the 70:20:10 school of thought.

  4. Now
    Two colleagues at the table, with laptop and tablet

    From method to AI

    The same knowledge, now in AI. The question stays, the reach grows.

The team.

  • Jos Arets

    Founder, method and research

  • Vivian Heijnen

    Co-owner, leads cases and implementations

  • Nas-Raddine Touhami

    Operations manager

  • Willeke Hartmann

    Learning consultant

  • Joel Arets

    AI and technology

Business partners.

  • Belia Nel

    Systems-thinking performance architect

    Improvid, South Africa. Board director of ISPI and president of ISPI Africa.

  • Andy Lancaster

    Chief learning officer

    Reimagine People Development, United Kingdom. Led learning at the CIPD for more than ten years and wrote Driving Performance Through Learning and Organizational Learning Communities.

Start with a conversation.

An hour with Jos or Vivian. Afterwards you know which service fits and what it yields for your department.