PsyToolkit is developed by and belongs to Professor Gijsbert
Stoet. Anyone can use PsyToolkit for non-commercial research and
non-commercial educational projects, as long as Professor Gijsbert
Stoet and PsyToolkit are acknowledged in any resulting publication.
The copyright of all PsyToolkit material belongs to
Professor Gijsbert Stoet. The PsyToolkit code and lessons can be used
freely for non-commercial educational and research purposes, as long
as Professor Gijsbert Stoet is acknowledged. For commercial use, for
example in text books, you need to ask formally for permission. When
in doubt, you should contact Professor Gijsbert Stoet as well.
There are various PsyToolkit implementations of
questionnaire scales on this website. For each scale, the PsyToolkit
developer has done his best to find out if researchers and students
can use the test. You can find such information for each questionnaire
under the legal notes. If you are aware of a mistake, please report
it. The copyright of those scales typically belongs to the authors who
created them (but for each scale, you need to check the legal
notes). You always need to acknowledge those who have designed the
questionnaires by citing their work.
Any copyright violations or misuse of PsyToolkit will be
reported to the relevant authorities. Anyone who uploads illegal
material on the website will be reported to the relevant authorities.
Reprint/use of images from this webpage for publication in
journals or books is not allowed, unless arranged against a fee with
Professor Gijsbert Stoet.