axiological

adjective2

1. •
   Of or relating to value theory, the philosophical field of axiology.

   • Students of psychology and epistemology are familiar with the axiological literature of the last forty years, and are here reminded of the great diversity of opinions on this topic. — 1922
2. •
   Of or relating to values themselves.

   • It might now be thought that the object of this judgment is the validity of value or an axiological validity (as distinct from a theoretical validity). — 1913