Herbert is a Master Practitioner in Neuro Linguistic Programming. For almost two decades, he has carried out research into the practical application of findings from cognitive psychology to the teaching of English as a foreign language.
Herbert has co-authored a number of course books for the teaching of English as a foreign language (among them Playway to English, More! and English in Mind), as well as articles and resource books. His latest resource books are Teaching Grammar Creatively, Multiple Intelligences in EFL and Imagine That! Herbert is currently President of IATEFL, the International Association of Teachers of English as a Foreign Language.