Assertion: curve's rise | /r/HasProperty | followed by a period of retardation
Facets:
Source sentences:
text: The first known use of the term learning curve is from 1903: "Bryan and Harter (6) found in their study of the acquisition of the telegraphic language a learning curve which had the rapid rise at the beginning followed by a period of retardation, and was thus convex to the vertical axis.