Video What is Functional Fixedness? 0 Comments Bookmark Main Site Sign in Page Don't have an ATD account? Don't have an ATD account? Forgot your Password? Already an ATD customer without a web account? Institutional subscriber? Click here to sign in. Share Member-Only Content Nelson Soken explains functional fixedness and offers advice for developing materials to teach learners new things. To access this content Join ATD or sign in. Sign In