International Snoezelen Association ISNA - Snoezelen professional e.V.


What is Snoezelen?
Is it a method offered to relax and feel good?
Is it a support measure?
Is it therapy to treat mental and psychological disorders? ...

Is the Snoezelen room a social contact area? Is it a room, where through targeted interventions, feelings of discomfort and fears are disappearing and where one can feel save? Can clients rely on good care and support being provided by experts?

Yes, Snoezelen is all the above but sadly in reality that’s not always the case!

For more than 20 years, students form the universities of Darmstadt, Marburg, Gießen and Berlin have been working with me on concepts of therapy and support. In cooperation with children, adolescents and adults with disabilities, we were able to plan units that were adapted to the clients needs. All the people involved were able to give us their feedback and describe their impressions, either through their behaviour but often also verbally.

Based on that and as a result of an abundance of dissertations we were able to publish a wide range of test results. (cf. Medical staff, psychologists, educational staff in schools and nurseries, computer scientists amongst many others have supported our research.

Investigation outcomes and suggestions regarding room design and choice of equipment were passed on to suppliers of equipment or presented at conferences. On request our consultants are still visiting facilities to provide advice and guidance regarding room design.

What concerns me, is the increasing number of “Snoezelen therapists” that have popped up over the last few years and who are offering their services without any prior well-founded diagnostics or efficiency certificates. The necessary Basic module I and II (3-day courses) as well as the subject specific seminars III, IV, V (2 day-courses each) required to obtain the Additional qualification Snoezelen, are not carried out, dissertations and practical exams are not requested anymore (cf.

Often it’s only when people come to visit Information events, that they realise, that these courses form the basis of Snoezelen as a support and therapy measure and that it is not only practical but also of utmost necessity, to attend these courses or for facilities to offer in-house training.

Please feel free to contact us with any questions or requests you may have; we are always happy to help.

Next year we will be returning to the Netherlands, to the cradle of Snoezelen, to celebrate the 20th anniversary of “ISNA – Snoezelen-professional e.V.”. You are very welcome to join us.

Yours sincerely

unterschrift krista mertens

Prof. Dr. Krista Mertens (1st chair)


Since 1998 Snoezelenroom at the Humboldt-University in Berlin 2002 founding year of ISNA at HU
entspannungsmethoden fragbogen
methods of rest and relaxation questionnaire on sensitivties

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