Kristin Bergfeld is one of five writers of the Clutter-Hoarding Scale™ released in 2011 and published by ICD (Institute for Challenging Disorganization formerly NSGCD). The ICD Clutter-Hoarding Scale™ is available as a free download, although a donation is encouraged.
Simply visit the C-HS page on the ICD website to download. It is available as either a Quick Reference Guide, or a full 16-page version.