I think Vetenskap och Folkbildning (authors of the linked text) have a website with some longer articles and more details. If I remember correctly there were a

I think Vetenskap och Folkbildning (authors of the linked text) have a website with some longer articles and more details. If I remember correctly there were a few public services (police? hospital?) that paid a lot of money to the author of the book for private courses. I think that the book is a typical case of "You have a complex problem and my snake oil provides an easy solution"