This reminds, also, of the Dunning-Kruger effect. Here, those who've truly learned more are also more reserved in their self-evaluation – while those given a mo

This reminds, also, of the Dunning-Kruger effect. Here, those who've truly learned more are also more reserved in their self-evaluation – while those given a more comforting-but-transient "gloss" of instruction overestimate their learning.