Error 404: file not found

I am moving the useful content in the old static HTML site at www.psyctc.org to a WordPress site at www.psyctc.org/psyctc/
It's possible that the file you sought was part of the old site that has been rendered obsolete in this migration.
If so, you should be able for find it under:

https://www.psyctc.org/psyctc/psyctc-org-home/stats/ for statistical things
https://www.psyctc.org/psyctc/psyctc-org-home/instruments/ for questionnaires and other instruments, or, for everything else ...
https://www.psyctc.org/psyctc/ the root of the site

If you are fairly sure the file existed and want the last historical copy, go to the amazing WayBackMachine archive for the last image before I started migrating things